Latent Growth Curve Model Evaluation of Illicit Substance and Tobacco Use among Young Adults in Cumberland County, North Carolina
Young adulthood is a period when individuals experiment health risk substances such as illicit substance and tobacco use that may predispose them to sexually transmitted diseases. Minority young adults living in HIV prevalent urban communities are notably more likely to engage in these behaviors. In the United States, minority young adults over-represented with HIV infection. To resolve this problem, the United States Congress has invested over $100million in grants. In the United States, few studies have examined illicit substance and tobacco use among this vulnerable population. This study aimed to evaluate the impact of a comprehensive HIV prevention program (CIHPP) on illicit substance and tobacco use among minority young adults living in a high prevalence of HIV infection urban community.
Introduction
In 2017, approximately 25% of adults in the United States had some form of a substance use disorder, and those adults consume 40% of all cigarette smoke by adults [1, 2]. Among young adults, research shows a disproportionate number of people with mental health problems engage in risky sexual behavior such as tobacco and illegal substance use; Glossary of Terms for Nebraska Behavioral Health System 2006. Mental Health board Training Self-Study. In Cumberland County, the Survey on Drug Use and Health reports that in 2014, Cumberland County’s total population was 272,192 of this total, 7.8% had substance abuse (SA) problems, which was slightly above North Carolina’s (SA) prevalence rate of 7.3% for young adults ages 18-25, in 2014, the (SA) prevalence rate was 16.9%, which was two times more than the County’s and the State’s S.A. rates. In 2015, the (SA) rate for Cumberland County, North Carolina, and young adults ages 18-25 increased to 8.9%, 8.6%, and 18.5%, respectively North Carolina Department of Public Health and Human Services (2014) North Carolina HIV/STD Quarterly Surveillance Report: Vol. 2014, No. 4, Raleigh, North Carolina.
These data clearly show that Cumberland has a substance abuse problem which is on the rise, especially among person ages 18-24 years. Collectively, these data suggest a need for a comprehensive, integrated, evidence-based (SA) HIV and HCV prevention and environmental prevention strategies, policies, and practices in Cumberland County. Recent (2016) National Minority SA/HIV Prevention Initiative survey of minority young adults showed variation in attitude toward different types of substance abuse among this population. A vast majority (76%-97%) viewed illicit drugs, prescription drug use without doctor’s prescription, and injected drug use as having moderate to high physical risk. But, a vast majority (78.9%) considered marijuana use as having no to slight physical risk.
Tobacco use refers to smoking cigarettes, cigars, smokeless tobacco, e-cigarette and pipe tobacco in the past year and past month. Studies show that one in five individuals within the U.S. have a mental health disorder, yet this population consumes almost half of all cigarettes sold within the U.S [2].As a result, individuals with mental health disorder account for more than 40% of tobacco-related deaths each year and incur additional social constraints such as discrimination and stigma which contribute to increased alienation and poorer mental health [3].
Illicit substance includes, but not limited to, ecstasy, opioid, crack cocaine, methamphetamine, and inhalants that reduce pain, including prescription drugs and heroin, which has found to be associated with increased HIV risk if people share needles and other injection equipment (University of California-San Diego. 2007. High-risk Behaviors Could Lead To HIV Epidemic In Afghanistan. Science Daily, August 29 2007). Recent data indicate that one-third of new HIV infection the United States attributed to no injecting substance use such as ecstasy, methamphetamine, inhalants, and crack cocaine.
Prevalence of Persons Living with HIV Infection (PLHI)
The NCDHHS reports that Cumberland County continues to battle against sexually transmitted and other diseases. For example, in 2013, there were 1,339persons living with HIV infection (PLHI) in Cumberland County of this total, 866 were infected with HIV, and 473 had AIDS. There were 158 PLHI young adults ages 15-24years old, representing 0.6% with a corresponding HIV infection rate of 27.7per 100,000population in Region 5, which includes Cumberland County. This HIV infection rate is higher than North Carolina’s rate of 25.7per 100,000 people. Desegregating PLHI rate in Region 5 which include Cumberland County by race/ethnicity shows that except for Hispanics and Asian/ Pacific Islanders, rate of PHLI was higher than that of North Carolina, with the PHLI rate and percent of American of 4.9% and 189.6 per 100,000 population is seven times higher than North Carolina’s 0.7% and 175.2 per 100,000 people; African Americans were 69.4% and 710.4 per 100,000 population compared to North Carolina’s 65.4% and 857.8 per 100,000 people.
Prevalence of Newly diagnosed HIV Infection and AIDS
In 2013, Cumberland County had 97 newly diagnosed HIV infections, which rank 3rd among all North Carolina Counties in newly diagnosed HIV infection rate with 26.0% HIV infections per 100,000 populations (97 cases) compared to N.C. rate of 15% per 100,000 people. From 1983-2013, Cumberland County had a cumulative number of HIV cases of 2,087, which ranks 6th out 100 Counties in North Carolina. During the same period, the County had 910 increasing cases of AIDS, which ranks 6th among the 100 counties in North Carolina. North Carolina State Center for Health Statistics (NCSCHS) reported that during the period 2007-2011, Cumberland County’s HIV rate of infection of 27.3/100,000 population was 1.54 times higher than the State of North Carolina’s HIV infection rate of 17.7 per 100,000 people. Also, NCHHS reported that during 2007-2011, Cumberland County’s total AIDS rate of 3.4p/100,000 population was 1.7 times higher than North Carolina State’s total AIDS rate of 2.0 p/100,000 population was 13% higher than all its peer counties, except for one (Mecklenburg County) in the State. These statistics suggest the need for HIV prevention intervention for HIV positive persons in Cumberland County as well. This HIV prevalence data indicate that the newly diagnosed HIV infection rate of our target population is higher than expected and hence the need for HIV prevention with HIV positive person’s interventions for our target populations. In summation, these HIV infections and substance abuse prevalence data clearly show not only a higher than expected rate of HIV infection among young adults aged 18-24 who use illicit substances was in Cumberland County but also that substance abuse problem exceeds expectation in Cumberland County, and it is on the rise, especially among persons ages 18-24 years.
HIV Infection Risk Behavior and Integrated HIV Prevention Program (CIHPP)
Existing data show that minority young adults use illicit substances more than other racial and age groups in Cumberland County (North Carolina Department of Public Health and Human Services (2014) North Carolina HIV/ STD Quarterly Surveillance Report: Vol. 2014, No. 4, Raleigh, North Carolina). This minority young adults account for a higher rate of sexually transmitted infections (STIs), including HIV. This high-risk sexual behavior in minority communities across the United States making STD prevention a top priority, for example, in the last decade alone, the U.S. Department of Health and Human Services has invested heavily by awarding over 100million dollars in grants to community-based organizations and institutions of higher learning to design and implement innovative culturally and linguistically appropriate evidence-based strategies to reduce health risk behaviors among this subpopulation.
One such strategy is the comprehensive, integrated HIV prevention program (CIHPP). The CIHPP is a high impact approach to HIV, and other infectious disease prevention targeted to at-risk populations. The approach has been highly endorsed by the Center for Disease Control, Health Resource and Service Administration and the Institute of Health as the most effective evidence-informed strategy to prevent infection and spread of HIV and other infectious diseases among at-risk populations. This approach to HIV prevention is premised on the ecological epidemiology framework which recognizes that health risk behaviors such as excessive alcohol consumption, illicit substance use, and tobacco use involve complex interactions between social and biological factors [4, 5, 6, 7, 8]. This framework is derived from Jessor’s (1991) problem behavior theory (PBT), which proposes interrelated conceptual domains of risk factors, for adolescent and young adults [9]. This theory suggests that young adult risk factors consist of a personality system, social environment, and behavior. The theory has been extended to the domain of psychosocial theory that views health risk behaviors as co-occurring among young adults. Collectively [9, 10], these theories suggest that assessing the effectiveness of prevention programs should include an examination of the association between externalizing problems (such as illicit substance use, and tobacco use) and internalizing problems (Bronfenbrenner U, et al. Ecological Models of human development. International Encyclopedia of Human Development. 2nd Edition. Oxford, U.K: Elsevier, 1994, pp. 1643-1647) ecological epidemiology framework, effective prevention strategies should identify and address predisposition of the high sexually transmitted prevalence of sexually transmitted infections in individuals and communities at all four levels (i.e., individual, interpersonal, community, and societal) that predispose minority young adults to risky sexual behavior.
The prevalence of individual-level risk behavior includes having multiple sex partners, having sex without condoms, having concurrence partnerships, sharing infected needles, etc. that are affected by community illicit substance and tobacco use environment. The prevalence of interpersonal risk behavior refers to social and sexual network structure (i.e., network size, density, mixing, and turnover) and compositional factors (i.e., characteristics of network members) that influence minority young adult HIV transmission. Community-level risk factors include the density of tobacco and illicit substance outlets [11, 12, 13, 14]. Societal level risk factors encompass public policies that shape the environment of the community such as policies that promote high density of alcohol and other risky sexual behavior products outlets in poor and minority neighborhoods leading to segmentation of drinkers in hot spots for HIV risk behaviors and HIV transmission [13].
The ecological epidemiology framework is a multilevel structure in which social and environmental fabrics and contexts influence health outcomes, such as mental health problems. This framework, and by extension Jessor’s problem behavior theory, proposes a complex disease system characterized by disease and mental health problems with multiple causative factors that are manifested in both social and physical contexts in a particular population. The numerous levels of influence are viewed as concentric circles beginning with the individual level, the neighborhood or community level, and societal level [15]. The framework is based on the idea that individuals operate within spheres of influence at the individual, interpersonal, community, and societal levels. The individual level is considered the microsystem where individuals operate within their family and home environment, school and peers, work-peer networks, peer support, family support, parental mentoring, and parental involvement in health risk behaviors networks. This individual-level characteristic is nested within the larger community, which consists of community norms, attitudes regarding health risk behavior, cultural norms, gender norms, spiritual and religious norms, and ideological and political norms. The individual-level health risk behaviors may include tobacco and illicit substance use, which predisposes the individual to unsafe sexual practice or behavior. Interpersonal characteristics are social and sexual networks, social norms, illicit substance use, and setting/ situational factors.
Community risk behaviors include community social and economic disadvantages, crime, and homelessness. Societal risks are racism, stigma, segregation, formal and informal public policies, and religious and cultural norms. The macro-policy level may also include the biological and physiological status of important systems of the body that regulate behavior, including the nervous system, endocrine system, the digestive system, immune system, and renal system. The macro-policy level consists of advertisements and marketing policies related to health risk behaviors. Hence, effective prevention strategies and policies should include a continuum of activities that address these multiple spheres of influence to achieve desired health outcomes.
The ecological epidemiology framework of the comprehensive HIV prevention program germane to our study implies identifying the prevalence of HIV infection and transmission rates in the target population by conducting needs assessments of measurable constructs at each level or domain of influence, at cross-level connections at both the micro and macro levels, as well as by examining the macro social and micro social or protective factors (risk regulators) that can either constrain or promote the occurrence of individual-level behavior associated with the risk of HIV infection. The needs assessments, in turn, provide objective data for developing a strategic HIV prevention plan for the target population and community. So far, no research that we know of have has validated the psychometric properties of the expected outcome of CHIPP, much less evaluated the anticipated results of CHIPP.
Purpose of the Study
HIV infection among this vulnerable population. The purpose of this study is to begin a line of inquiry of the effectiveness of CIHPP in rising in reducing illicit substance and tobacco use among minority young adults. The information obtained from this s sexual behaviors among minority young adults. The information collected from this s policy-relevant information that be relied upon in designing efficient and effective public policies to reduce the use of tobacco among minority young adults.
Research Question
This study sought to provide an empirically-ground answer to the following research question: 1. How effective is the comprehensive, integrated HIV prevention program in raising awareness of illicit substance use risk of young adults? 2. How effective is the comprehensive, integrated HIV prevention program reducing tobacco use of young adults?
Research Hypothesis
1. The comprehensive integrated HIV prevention program has a increses illicit substance use risk awareness of young adults. 2. The comprehensive integrated HIV prevention program reducing tobacco use of young adults.
Materials and Methods
Research Design
The study used a pre-experimental One-shot case Study Design [16, 17, 18]. A schematic representation of the study design is displayed in Table 1.
| Treatment | Post-Test |
|---|---|
| X | O1 , O2 …On t1 t2 tn |
Where X is the participation of a young adult’s in the Comprehensive Integrated HIV prevention program. Illicit substance use and tobacco use O2 is the level of minority young adult’s level of illicit substance use risk awareness and tobacco use risk awareness. A limitation of this type is the absence of a control group. However, using the latent growth curve model within the framework of structural equation modeling (SEM) to analyze the data modulated this limitation. In summation, the LGC modeling approach to estimating change has six important unique features that make it superior to other longitudinal methods in assessing domain outcomes change over time.
Where X is the participation of a young adult’s in the Comprehensive Integrated HIV prevention program. Illicit substance use and tobacco use O2 is the level of minority young adult’s level of illicit substance use risk awareness and tobacco use risk awareness. A limitation of this type is the absence of a control group. However, using the latent growth curve model within the framework of structural equation modeling (SEM) to analyze the data modulated this limitation. In summation, the LGC modeling approach to estimating change has six important unique features that make it superior to other longitudinal methods in assessing domain outcomes change over time. 1. The approach can accommodate anywhere from three to thirty waves of longitudinal data equally well. Indeed, Willett (1988,1989) has shown that the more waves of data collected, the more precise the estimated growth trajectory and higher will be the reliability of the measurement of change. 2. There is no requirement of the time between each wave of assessments to be equivalent, which suggests that the LGC modeling approach can comfortably accommodate irregularly spaced measurements with the caveat that participants are measured on the same set of occasions. 3. Individual change can be represented by either a linear growth or a non-linear growth trajectory, although linearity is usually assumed. This assumption can be tested, and the model re-specified to address curvilinearity if needed. 4. In contrast to traditional longitudinal methods used in measuring change, with the LGC allows for estimating measurement error and accounts for autocorrelation and fluctuation across the time when the test for the assumptions of independence and homoscedasticity is untenable. Fifth, multiple predictors of change can be included in LGC as fixed or time-varying.
5. Finally, independence of measurement error variances and homoscedasticity of measurement is tested by comparison to nested models.
Participants and Method of Data Collection
Participants in this study were a random sample of minority young adults (18-24 years old) living in a high prevalent community in the southeastern United States who volunteered to participate in the study. After receiving Institutional Review Board’s (IRB) approval, culturally and linguistically appropriate announcements and advertisements were made to residents of the high HIV prevalence community through various young adult outlets including social media, radio, print media, community organizations, word-of-mouth and distribution of flyers in the community to attend community health events and participate in a health risk behavior study survey.
Participants who volunteered to participate in the study were informed that a survey will be conducted periodically over 24months to obtain their opinion about key risky behaviors such as excessive alcohol consumption risk awareness, excessive alcohol consumption, illicit substance use risk awareness, illicit substance use, tobacco use risk awareness, tobacco use, and risky sexual behavior that may predispose people to HIV infection. They were also informed that their participation was strictly voluntary and that they may either opt not to participate in the survey and leave or not provide a response to any of the statements. In addition, the community residents were informed that a no-cash incentive in the form of $30 gift card would be provided for their participation in the surveys. The community residents who agreed to participate in the survey were provided with a linguistically appropriate consent form to read, sign, and date. The consent form explained to the community residents that their participation was voluntary and that their identity would be kept strictly confidential, and their names would not appear in any report.
The survey instrument used in this study is the National Minority Substance/HIV Prevention Initiative Adult Questionnaire approved on March 15, 2016, by the United States Office of Management and Budget. Items measuring the two constructs (i.e., illicit substance use, and tobacco use risk awareness) of this study were extracted from this Questionnaire. It should be noted that the validity of the constructs in this measurement instrument has never been validated before our research. Hence, we first had to use the data collected from participants in the CIHPP to test the reliability and validity of the instrument conducting exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) before preceding our evaluation of the effectiveness of the CIHPP.
The Questionnaire included items measuring the four constructs listed above, and demographic information of the participants. Upon Institutional Review Board (IRB) approval, we administered the survey to the participants who volunteered, read and signed the consent form. We adhered to all American Psychological Association research guidelines. The survey was anonymous in that no identifying information was connected to individual participants or included in the study data set. Participants completed the survey in less than 25minutes during the event and returned them before leaving. A total of 518minority young adults participated in the survey, and 498 of them completed the entire survey representing a 96 percent response rate.
Measures
Substance use risk awareness was measured by five items such as “During the past 30 days, on how many days did you use synthetic marijuana (also called K2, Spice, fake weed, King Kong, Yucatan Fire, Skunk, or Moon Rocks)?”. The items were scored on a Likert Scale ranging from 0 days-0 to 30 days=30. Tobacco use risk awareness was measured by 2 items such as, “How much do people risk harming themselves physically and in other ways when they smoke one or more packs of cigarettes per day?”.
Statistical Analysis
This study used the latent growth curve modeling (LGC) within the SEM framework to evaluate the in in traindividul with intra-individual change of CIHPP participant’s excessive alcohol consumption risk awareness, excessive alcohol consumption, illicit substance use risk awareness illicit substance use, safe sex practice, risky sexual behavior, and tobacco use risk awareness over time. The hierarchical levels to be used in assessing invariance consist of:
- Configural Invariance test to determine if the same factor structure exists in all groups.
- Metric Invariance to test whether the loading estimates are equal in all groups which allows comparisons of relationships.
- Scalar Invariance to test whether the intercept terms for all equations are equal in all groups which allow for comparisons of means.
- Factor Covariance Invariance to test whether the covariances matrix among latent constructs is the same in all groups.
- Factor Variance Invariance to test whether the factor variances are the same in all groups.
- Error Variance Invariance to test whether error variance terms are the same in all groups.
The analytic method used to assess the psychometric properties of the National Minority SA/HIV Prevention Initiative Adult Questionnaire (NMSPIAQ) will consist of four interrelated SEM procedures.
The analytic method used to assess the psychometric properties of the National Minority SA/HIV Prevention Initiative Adult Questionnaire (NMSPIAQ) will consist of four interrelated SEM procedures. 1. Exploratory Factor Analysis (EFA) to assess the factorability of each factor and assessing the internal consistency (i.e., Cronbach’s alpha) of the psychometric properties of NMSPIAQ using SPSS version 26.0. 2. Single group Confirmatory Factor Analysis (CFA) of NMSPIAQ to determine to construct and content validity of NMSPIAQ. 3. A series of Multi-group CFA to test the invariance of NMSPIAQ across static factors groups. 4. Latent Growth Curve (LGC) modeling within the SEM framework using Analysis of Moment Structure (AMOS) version 26.0 to answer questions about systematic intra-individual with minority young adults innate and inter-individual minority young adults differences in change over time of minority young adult’s likelihood risk of illicit substance and tobacco use. AMOS statistical software version 26.0 was used to analyze the second through the fourth procedure. A description of each method is presented below.
Exploratory Factor Analysis
The first phase of our investigation was to assess the reliability or internal consistency of the key CIHPP outcome constructs by performing an exploratory factor analysis (EFA) to determine the meaningful factor loading structure of the items or observed variables were measuring the CIHPP outcome constructs. The EFA began by checking the assumptions necessary for proceeding with factor analysis. The check involved assessing the degree of in tercorrelation of the items from both the overall and individual variables perspectives. The overall measure of in tercorrelation was evaluated by a. Computing the partial correlation or anti-image correlation among the variables, with small values indicating the existence of “true” factors in the data [19]. b. Performing Bartlett’s Test of Sphericity, with significant approximate chi-square (χ) indicative of significant correlation among at least some of the construct’s observed variables; and c. Estimating the Kaiser-Meyer-Olkin Measure of Sampling Adequacy (MSA) value, with MSA values above .50 considered acceptable to proceed with factor analysis [19].
The variable-specific measure of in tercorrelation was assessed by estimating the Kaiser-Meyer-Olkin (KMO) measure of sampling adequacy (MSA) value for each observed variable or item with values below .50 considered to be unacceptable [19, 20]. The variable with the lowest MSA value was deleted, and the factor analysis was repeated. This process continued until all the observed variables had acceptable MSA values, and we proceeded with factor analysis. Principal component factor analysis applying the varimax rotation reduced or organized the item pool into a smaller number of interpretable factors. The number of factors was determined by joint consideration of (Cattell RB, et al. "The Scree Test for the Number of Factors". Multivariate Behavioral Research 1, 629-637, 1966) scree plot, a priori, and percentage of factors to be extracted criteria [19]. The latent root residual (eigenvalue) criterion was inappropriate if the number of observed variables falls below or outside the acceptable range of 20 to 50 [19, 20]. (hurstone LL, et al. multiple-Factor Analysis. Chicago: University of Chicago Press, Chicago, Ill, 1947) Subsection titled Multi- Group analysis principle of simple structure using pattern coefficients of absolute 0.35 as the lower bound of essential per factor and interpretability of the solution to determine the final solution [21]. After rotation, variables with cross- loading and communalities lower than 50 were deleted [19].
The second step of the analysis involved reviewing the items measuring each dynamic factor by calculating the internal consistency estimates (Cronbach’s alpha) for the items representing each factor retained from the exploratory factor analysis procedure. Cronbach’s alpha of 0.6 is the minimum acceptable level of internal consistency for using a factor [19]. For factors with Cronbach’s alpha below this minimum benchmark, the internal consistency of the factors improved by identifying and removing items with low item-test correlation and item-rest correlation [22]. If no improvement of the reliability score occurred, the factor deleted.
Single Group Confirmatory Factor Analysis
After establishing the reliability of the CIHPP, expected outcomes constructs (i.e., illicit substance and tobacco use) were validated by performing a single group CFA. This validation involved testing for the factorial stability of the scores for each CIHPP outcome construct [23]. This test aimed to determine the extent to which items designed to measure each CIHPP outcome factor (i.e., latent construct) do so. Because the analysis was performed on original data and not data summary, missing data will be handled by using the full information maximum likelihood (FIML) procedure. This FIML allowed for the performance of maximum likelihood estimation on a dataset containing missing data, without any form of imputation [24].
Several indices evaluated the goodness of fit of the 6-factor orthogonal CIHPP measurement model. The guidelines for determining model fit consisted of adjusting each index cutoff values based on model characteristics as suggested by simulation research that considers different sample size, model complexity, and degree of error in the model specification as a basis for determining how various accurate indices perform [25]. The model’s absolute fit assessed using chi-square statistic, χ2, with low, insignificant χ2 considered a good fit [26]. The evaluation of incremental fit was examined using Root Mean Square Errors of Approximation (RMSEA) with a value less than 0.8 indicating a relatively good fit, along with Comparative Fit Index (CFI) and Tucker-Lewis Index (TLI) with a value of 0.97 or higher considered desirable [26]. Convergent validity among items was determined by estimating the unstandardized factor loadings and Cronbach’s alpha with significant loadings and alpha of 0.70 or higher considered good reliability [19]. Construct validity of the model was evaluated by examining the completely standardized factor loadings with approximately factor loadings of 0.5 or higher and construct reliability (Cronbach’s alpha) equal or greater than 0.7 considered to be good [19, 27]. Also, a parametric test of the significance of each estimated (free) coefficient was performed. Insignificant loadings with low standardized loading estimates were deleted from the model. To assess problems of the overall model, the completely standardized loadings were examined for offending estimates, such as loadings above 1.0. Any identified offending estimates were dropped from the model. Finally, internal consistency estimates (Cronbach’s alpha) calculated for the item representing the CIHPP outcome factor retained. Cronbach’s alpha of 0.7 considered as a minimum acceptable level of internal consistency for retaining the factor. For factors with Cronbach’s alpha below this minimum threshold, an attempt to improve the internal consistency was made by identifying and removing items with low item-test correlation and item-rest correlation [28, 29, 30, 31, 32, 33, 34, 35]. The factor model deleted if, no improvement of the reliability score occurred, the factor removed from the model of the construct.
An assessment of the likelihood that the model’s parameter estimates from the original sample will cross- validate across in future samples by examining the Information Criterion (AIC) and consistent version of the AIC (CAIC) with lower values of the hypothesized compared to the independent and saturated models considered to be an appropriate fit. The likelihood that the model cross-validates across similar-sized samples from the same population was determined by examining the Expected Cross-Validation Index (ECVI) with an ECVI value for the hypothesized model lower compared to both the independent and saturated models considered to represent the best fit to the data. Finally, Critical N (CN) was estimated to determine if the study’s sample size is sufficient to yield an adequate model fit for a χ2 test (with a value over 200 for both .05 and .01 C.N. indicative of the CIHPP outcome measurement model adequately representing the sample data. The normality of the distribution of the variables in the model was assessed by Mardia KV, et al. [31, 32] normalized estimate of multivariate kurtosis with a value of 5 or less reflexive of normal distribution. Multivariate outliers were detected by computation of the squared Mahalanobis distance (D2) for each case with D2 values standings distinctively apart from all the other D2 values indicative of an outlier Multi-Group Analysis After validating the factorial structure of NMSPIAQ, we proceeded to conduct a series of multiple groups CFA to test the invariance of CIHPP outcome factors across static factors groups. The multiple-group analysis of this study involved performing three types of CFA.
- Examining the factorial invariance of CIHPP illicit substance and tobacco use risk scales (1st Order CFA Model).
- Testing the invariance of dynamic factor mean structure.
- Examining the invariance of CIHPP factors causal structure.
The central concern of measurement invariance is the testing of measurement equivalence across groups (Byrne B, Shavelson R, Muthén B Testing for the equivalence of factor covariance and mean structures: The issue of partial measurement invariance. Psychol. Bull. 1989, 105, 456–466 [CrossRef]). We conducted the test at two types of models: first-order models and second-order models (Little TD Mean, and covariance structures (macs) analyses of cross-cultural data: Practical and theoretical issues. Multivariate Behavior Research. 1997, 32, 53-76). These tests are the suggested procedures for testing measurement invariance across a hierarchical series of models, and their collective purpose is maximizing the interpretability of the results sought at each step of the hierarchy [33, 34, 35, 36, 37, 38, 39, 40].
Latent Growth Curve (LGC) Modeling
The LGC modeling within the SEM framework evaluated the illicit substance and tobacco use risk of each minority young adult periodically based on time-invariant and CIHPP outcome factors, including indicators of progress and regression of CIHPP substance and tobacco use risk reduction expected to change. At the same time, young adults participated in CIHPP intervention. Unlike like the usual “scape shots” approach of taking the status of illicit substance and tobacco use risk before and after CIHPP intervention time-invariant and dynamic factors, the LGC model captures the actual development of the processes and outcome domains of interest following a trajectory over time to reveal the intricacies of in traindividual and in terindividual changes of young adults. Therefore, the approach capitalizes on the richness of continuous multi-wave data to provide a somewhat superior program evaluation approach for answering questions about systematic intra-individual young adults CIHPP outcome factor change and inter-individual young adults differences in CIHPP outcome factors change [41, 42, 43, 44, 45, 46].
Measuring young adult’s increase or reduction change over time for CIHPP illicit substance and tobacco use risk, a representative sample of young adults were tested systematically over time, and their status in illicit substance and tobacco use risk was measured on several temporal- spaced occasions based on four conditions [47, 48, 49].
- The illicit substance and tobacco use risk must be an interval level of measurement [47, 50, 51, 52].
- While the time lag between occasions can be either evenly or unevenly spaced, both the number and spacing of these assessments must be the same for all CIHPP participants.
- When the focus of individual CIHPP participants, change was structured as an LGC model, with analyses was conducted using the SEM approach, and the data was collected for each CIHPP participant on three or more occasions.
- The sample size should be large (i.e., a minimum
The basic building block of the LGC model comprised of two sub-models referred to as Level 1 model and Level 2 model [47]. Level 1 model is a within-person regression model that represents an individual’s change over time of the outcome variables, which in our case are the two CIHPP outcome domains mentioned earlier. Level 2 model is the between- person model that focuses on inter-individual differences in CIHPP outcome factors change over time. Level 1 (i.e., intra individual minority young adult change) focuses on capturing the measurement model, which is the portion of the model that incorporates only linkages between observed and latent construct or factor (i.e., likelihood of illicit substance and tobacco use). As in any measurement model, the primary interest is the strength of the factor loading or regression paths linking the observed variable to the unobserved variable. As such, the only parts of the model that are relevant in the modeling of intra individual change are the regression paths linking the observed variables to the unobserved factor (both intercept and slope) [55, 56, 57, 58, 59], the factor variances and covariances, and the related measurement errors associated with these observed variables. This part of the modeling is an ordinary factor analysis model with the following two unique features. First, all the loadings were fixed (i.e., there are no unknown factor loadings) [60, 61]. Second, the pattern of fixed loadings plus the mean structure allows us to interpret the factors as intercept and slope factors. As in all factor models, the present case argues that each minority young adults: likelihood of illicit substance and tobacco use at each temporal time point (i.e., Time 1=0; Time 2=1; Time 3 = 2), are a function of three distinct components: a. A factor loading matrix of constants (1:1:1) and known time values (0:1:2) that remain invariant across all individual minority young adults, multiplied by b. A latent growth curve vector containing individual minority young adult-specific and unknown factors called unique CIHPP participant growth parameter (Intercept, Slope), plus c. A vector of individual CIHPP participant-specific and unknown errors of measurement (Byrne BM 2016. Structural Equation Modeling with AMOS: Basic Concept, Applications, and Programming. New York: Routledge: Taylor and Francis). Whereas a latent growth curve vector represents the within-person true change in the likelihood of illicit substance and tobacco use over time, the error vector represents the within-person likelihood of illicit substance and tobacco use risk “noise” that serves to erode these actual change values [47].
Level 2 argues that, over and above the hypothesized linear change in CIHPP outcome domains over time, trajectories will necessarily vary across CIHPP participants as a consequence of differences in intercepts and slopes. Within the framework of SEM, this portion of the model reflects the “structural model” component [62, 63, 64, 65, 66], which in general portrays relationships among unobserved factors and postulated relations among their associated residuals. However, within the more specific LGC model, this structure is limited to the means of the Intercept and Slope factors, along with their related variances, which represent deviations from the Mean [67]. The Mean carries information on individual differences in intercept and slope values [68, 72]. The specification of these parameters, then, makes possible the estimation of intra individual differences in change. A regression analysis was performed using AMOS 26.0 LGC Models with static factors as Time-Invariant Prediction of change [73, 74]. The investigation was to determine the existence of statistically significant heterogeneity in the individual growth trajectories (i.e., intercept and slope) of illicit substance and tobacco use risk can be explained by the static variable as time-invariant predictors of change. This next test answered two questions.
- “Do the CIHPP illicit substance, and tobacco use risk differ for the subsets of a static factor at time 1 (i.e., 2018)?
- “Do illicit substance and tobacco use risk for CIHPP participants change differ over time for a subset of a static variable?” To answer these questions, the predictor variable “static factor” must be incorporated into the Level 2 (or structural) path of the model. This predictor model represented an extension of our final best-fitting multiple domain model (Model
- of important here is the addition of four new model components [75].
There two main advantages in testing for individual change within the framework of structural equation modeling over other longitudinal approaches. a. The LGC modeling within the SEM framework evaluation approach uses the analysis of mean and covariance structures. Hence, it can distinguish group effects observed in means from individual effects observed in covariance [82, 83]. b. A distinction is made between observed and unobserved (or latent) variables in the specification of models. This
capability allows for both the modeling and estimation of measurement error. Hence, our LGC analytic approach explains the heterogeneity of inter-individual differences based on one or more predictors and covariates or moderators. The analysis used plugins of IBM AMOS version 26.0 [84].
Results
The results of this study consist of estimates of mean, covariance, and Variance of the latent growth curve model of each domain of the two CIHPP outcome domains of interest including, illicit substance use and tobacco use risk. The results of each of these CIHPP outcome domains is presenting below [85].
Illicit Substance Use Latent Growth Curve Model Results
Mean Estimate: The results indicate that the mean estimate of illicit substance use for the intercept and slope suggests that both the intercept and slope is statistically significant. Specifically [86, 87, 88, 89], the findings reveal that the average score for illegal substance use of 5.411 decreased significantly over the 24months periods, as indicated by the value of -14.174; p=001 (Table 1).
| Estimate | Standard Error | t-Value | Significance | Label | |
|---|---|---|---|---|---|
| Intercept | 5.411 | 0.371 | 14.59 | 0.001 | I Mean |
| Slope | -.6.531 | 461 | -14.174 | 0.001 | S Mean |
Table 2: 1: Mean estimate for excessive Illicit substance use Intercept and Slope.
Covariance Estimate: The covariance between the intercept and slope factor for illicit substance use was statistically significant (t=-9.572=.001). The negative estimate of -49.547 suggests that young adults exhibited a low rate of increase in their illegal substance use over the 24 months. This finding indicates that the Comprehensive, integrated HIV prevention program was effective in decreasing the substance use of young adults under study (Table 2).
| Estimate | Standard Error | t-Value | Significance | Label | |
|---|---|---|---|---|---|
| Intercept˂--˃Slope | -49.547 | 5.172 | -9.572 | 0.001 | Covariance |
Variance Estimate: The variance estimate related to the intercept and slope for illegal substance use is statistically significant (p=.001). This finding reveals significant in terindividual differences in the original score of illicit substance use between the young adults at the beginning of the implementation of the CIHPP and its change over time, as the young adult progressed from the beginning of the CIHPP intervention through the 24months [90]. Such evidence provides powerful support for further investigation of variability related to the growth trajectory. Specifically, the incorporation of time-invariant of change into the model can explain the young adults’ illicit substance use variability [91, 92, 93]. This incorporation involves testing the latent growth curve model with a static variable as a time- invariant predictor of change (Byrne, 2016) [94]. This study incorporated gender in the LGC model as a predictor of change (Table 3) displays the result
| Estimate | Standard Error | t-value | Significance | Label | |
|---|---|---|---|---|---|
| Intercept | 43.797 | 4.24 | 10.329 | 0.001 | I Variance |
| Slope | 47.774 | 6.723 | 7.103 | 0.001 | S Variance |
Table 4: 1: Mean Estimate for tobacco use Intercept and Slope.
Regression Weight with Gender as Predictor: Gender was found not to be statistically significant illicit substance use predictor of both initial status (409) at p=.685 and rate of change (.400) at p=.400. This finding suggests that there was no meaningful difference in illicit substance use between minority young adult males and females both at the beginning of CIHPP and the rate of change during the 24 months intervention period [95].
| Estimate | Standard Error | t-value | Significance | Label | |
|---|---|---|---|---|---|
| Intercept | .309 | .309 | -.409 | .685 | Par_5 |
| Slope | .794 | .944 | .400 | .400 | Par_6 |
Table 5: 1: Mean Estimate for tobacco use Intercept and Slope.
Tobacco use Latent Growth Curve Model Results
Mean Estimate: The results indicate that the mean estimate of tobacco use for the intercept and the slope are statistically significant. Specifically, the findings reveal that the average score for tobacco (16.631) decreased significantly over the three 24-months periods as indicated by the value of (-8.573); p=001. Hence, we can conclude that CIHPP was effective in reducing tobacco use among minority young adults [96].
| Estimate | Standard Error | t-value | Significance | Label | |
|---|---|---|---|---|---|
| Intercept | 16.631 | 1.315 | 12..649 | .001 | I Mean |
| Slope | -10.707 | 1.249 | -8.573 | .001 | S Slope |
Table 6: 1: Mean Estimate for tobacco use Intercept and Slope.
Covariance Estimate: The covariance between the intercept and slope factor was statistically significant (p=.001). The negative sign suggests that young adults exhibited a low rate of increase in their tobacco use over the 24months. This finding indicates that the Comprehensive, integrated HIV prevention program was effective in decreasing the tobacco use of young adults under study [97, 98, 99].
| Estimate | Standard Error | t-Value | Significance | Label | |
|---|---|---|---|---|---|
| Intercept˂--˃Slope | -264.717 | 45.383 | -5.833 | 0.001 | Covariance |
Variance Estimate: The variance estimate related to the intercept and slope for tobacco use is statistically significant (p=.001). This finding reveals strong intra individual differences in the original score of tobacco use between the young adults at the beginning of the implementation of the CIHPP and its change over time, as the young adult progressed from the beginning of the CIHPP intervention through the 24 months. Such evidence provides powerful support for further investigation of variability related to the growth trajectory. Specifically, the incorporation of time-invariant of change into the model can explain the young adults’ tobacco use variability. This incorporation involves testing the latent growth curve model with the demographic or static variable as a time-invariant predictor of change (Byrne 2016 is: Byrne BM 2016. Structural Equation Modeling with AMOS: Basic Concept, Applications, and Programming. New York: Routledge: Taylor and Francis) [100, 101, 102, 103]. This study incorporated gender in the LGC model as a predictor of change. The result is presented in Table 3.
| Estimate | Standard Error | t-value | Significance | Label | |
|---|---|---|---|---|---|
| Intercept | 656.596 | 55.697 | 11.789 | 0.001 | Intercept Value |
| Slope | 234.781 | 57.392 | 5.203 | 0.001 | Slope Value |
Regression Weight with Gender as Predictor: Gender was found not to be statistically significant tobacco use predictor of both initial status (-1.935) at p=.473 and rate of change (3.265) at p=.202. This finding suggests that there was no meaningful difference in tobacco use between minority young adult males and females both at the beginning of CIHPP and the rate of change during the 24 months intervention period.
| Estimate | Standard Error | t-value | Significance | Label | |
|---|---|---|---|---|---|
| Intercept | -.1935 | 2.695 | -.718 | .473 | Par_5 |
| Slope | .3.265 | 2.557 | 1.277 | .202 | Par_6 |
Conclusion
The mean estimate for illegal substance use indicated a significantly decreased over the 24 months.. This finding suggests that the Comprehensive, integrated HIV prevention program was effective in reducing illicit substance use among minority young adults under study. The covariance estimate between the intercept and slope factor for illicit substance use indicated that young adult’s illicit substance use declined over the 24 months [104]. This finding indicates that the Comprehensive, integrated HIV prevention program was effective in decreasing the substance use of young adults under study [105]. The variance estimate showed evidence of in terindividual differences in the original score of illicit substance use between the young adults and its change over time, as the young adult progressed from the beginning of the CIHPP intervention through the 24months [106, 107, 108, 109].
There is a significant in terindividual difference in the original score of illicit substance excessive between the young adults at the beginning of the implementation of the CIHPP and its change over time, as the young adult progressed from the beginning of the CIHPP intervention through the 24months [110, 111]. However, there was no meaningful difference in illicit substance use between minority young adult males and females both at the beginning of CIHPP and the rate of change during the 24months intervention period [112, 113]. These estimates indicate that the CIHPP was effective in reducing illicit substance use among minority young adults. Hence, hypothesis 1 is confirmed. This finding is consistent with the results of previous research [114, 115, 116, 117, 118, 119]. But, there no meaningful difference in illicit substance uses between minority young adults female and young minority adult males during the 24 months implementation of the CIHPP. This finding the need for future studies to test other invariant variables [120].
As for tobacco use, the CIHPP was effective in reducing tobacco use among minority young adults. Hence, hypothesis 2 is confirmed [121, 122]. Also, there were inter-individual differences or heterogeneity in tobacco use among the minority young adults between minority young adult at the beginning of CIHPP intervention, and through the 24months [123]. However, there was no meaningful difference in tobacco use between minority young adult males and females, both at the beginning of CIHPP and the rate of change during the 24months intervention period. In other words, the in terindividual difference was not attributable to gender. Collectively, the result of this study is consistent with previous studies [124, 125, 126, 127, 128, 129].
Study Limitations
The study used one static variable, gender, as a predictor of both illicit substance use and tobacco use. To more precisely evaluate in terindividual change, we recommend that future studies use two or more static valuables [130, 131]. Also, the study did not examine other time-invariant variables such as race/ethnicity and household type. Therefore, as a contribution to theory building, future studies should research similar in two or more domains with similar populations [132, 133]. Finally, this study used a sample size of 498 minority young adults. Although this sample meets the recommended minimum threshold of a sample size of 200 for structural equation modeling (Byrne, 2016) [134, 138], the sensitivity of statistical significance testing to sample size (Cumming G, Calin-Jageman. 2017. Introduction to the New Statistics: Estimation, Open Science, & beyond. New York: Routledge Taylor 7 Francis Group), we recommend that future studies should use effect size instead [139, 140].
Acknowledgement
US Department of Human Services, Substance Abuse, and Mental Health Service Administration provided funding for this project (Grant Number: SP021355-01). We also express our gratitude to the staff of the Office of Sponsored Research and Programs at Fayetteville State to oversee the successful implementation of this grant project. Finally, we acknowledge the minority young adults who participated in the study.
References
-
Lapri RN, Park-Lee E, Horn SV (2016) America’s Need for and Receipt of Substance Use Treatment in 2015. Amrica’s Need for and rceipt of substance abuse use treatment in 2015. SAMHSA National Survey on Drug Use and Health The CBHSQ Report.
-
Rasmussen DD, Bolt BM, Bryant CA, Mitton DR, Larsen SA, et al. (2000) Chronic daily ethanol and withdrawal: 1. Long Term Changes in the hypothalamic-pituitary- adrenal axis. Alcohol Clin Exp Res 24(12): 1836-1849.
-
Colton CW, Manderschheld RW (2006) Congruence in increase mortality rate, years of potential life lost, and causes of death among public mental health clients in eight states. Preventing Chronic Disease 3(2): 42.
-
Sudhinaraset M, Wigglesworth C, Takeuchi D (2018) Social and cultural contexts of alcohol use: Influences of a Social-Ecological Framework. Alcohol Res 38(1): 35- 45.
-
March D, Susser E (2006) The eco-in eco-epistemology. International Journal of Epistemology 35(6): 1379-1383.
-
Dahlberg LL, Krug EG (2002) Violence: A global public health problem. In: Krug E (Eds.), World report on violence and health. Geneva, Switzerland: World Health Organization, pp: 1-56.
-
DiClemente RJ, Salazar LF, Crosby RA (2007) A review of STD/HIV preventive interventions for adolescents: sustaining effects using an Ecological approach. J Pediatr Psychol 32(8): 888-906.
-
Mason WA, Windle M (2001) Family, Religious, peer influences on adolescent alcohol use: A longitudinal study. J Stud Alcohol 62(1): 44-53.
-
Jessor R (1991) Risk behavior in adolescence: a psychosocial framework for understanding and action. Journal of Adolescence Health 12(8): 597-605.
-
Catalano RF, Hawkins JD, Berglund ML, Pollard JA, Arthur MW (2002) Prevention science and positive youth development: competitive or cooperative frameworks?. J Adolesc Health 31(6): 230-239.
-
Gruenewald PJ, Millar AB, Treno AJ (1993) Alcohol availability and the ecology of drinking behavior. Alcohol Health & Research World 17(1): 39-45.
-
Gruenewald PJ (2007) The spatial ecology of alcohol problems: Niche theory and assortative drinking. Addiction 102(6): 870-878.
-
Scriber RA, Cohen DA, Fisher W (2000) Evidence of a structural effect of alcohol outlet density: a multilevel alcohol analysis. Alcohol Clin Exp Res 24(2): 188-195.
-
Treno AJ, Grube JW, Martin SE (2003) Alcohol availability as a predictor of youth drinking and driving: A hierarchical analysis of survey and archival data. Alcohol Clin Exp Res 27(5): 835-840.
-
Bronfenbrenner U (1994) Ecological models of human development. International Encyclopedia of human development. 2nd (Edn). Oxford, UK: Elsevier, pp: 1643- 1647.
-
Isaac L, Michael WB (2014) Handbook in Research and Evaluation. EdIT Publisher San Diego: CA.
-
McNabb DE (2018) Research Methods in Public Administration and Non-Profit Management, Armonk: New York.
-
Cohen L, Manion L, Morrison K (2013) Research Methods in Education 7th(Edn), Routledge Taylor & Francis Group, London: United Kingdom.
-
Hair JF, Black WC, Babin BJ, Anderson RE, Tatham RL (2013) Multivariate Data Analysis, Upper Saddle River: Pearson/Prentice Hall.
-
Hans Vaughn DL (2017) Applied Multivariate Statistical Concepts. New York: Taylor Francis Group.
-
Lambert ZV, Durand RM (1975) Some precautions in using canonical analysis. Journal of Market Research 12(4): 468-475.
-
Nunnally J, Berstein I (1994) Psychometric Theory, New York: McGraw Hill.
-
Arbuckle JL (2007) Amos 17.0 User’s Guide. Crawford, FL: AMOS Development Corporation.
-
Bunch NJ (2010) Introduction to Structural Equation Modeling Using SPSS and AMOS. Sage Publications.
-
Hu L, Bentler PM (1999) Cutoff criteria for fit indexes in covariance structure analysis: Conventional criteria versus new alternatives. Structural Equation Modeling 6(1): 1-55.
-
Brown TA (2006) Confirmatory Factor Analysis for Applied Research. 2nd (Edn.), New York: Guilford Press.
-
Keith T (2006) Multiple Regression and Beyond Boston MA: Pearson Allyn and Bacon.
-
Bozdogan H (1987) Model selection and Akaike’s information criteria (AIC): The general theory and its analytic extensions. Psychometrika 52: 345-370.
-
Hoelter JW (1983) The analysis of covariance structure with incomplete data: A developmental perspective. In: Bovaird JA & N Card (Eds.), Modeling contextual effects in longitudinal studies. Mahwah NJ: Erlbaum 13-32.
-
Hu L, Bentler PM (1995) Evaluating model fit. _In_: Hoyle RH (Ed.) Structural equation modeling: concept issues and applications, pp: 79-99.
-
Mardia KV (1970) Measure of multivariate skewness and kurtosis with applications. Biometrika 57(3): 519-530.
-
Mardia KV (1974) Application of some measures of multivariate skewness and kurtosis in testing normality and robustness studies. The Indian Journal of Statistics 36(2): 115-128.
-
Willett JB, Sayer AG (1994) Using covariance structure analysis to detect correlate and predictor of individual change over time. Psychological Bulletin 116(2): 363- 381.
-
Bryke AS, Raudenbush SW (1987) Applications of hierarchical linear models to assessing change. Psychological Bulletin 101(1): 147-158.
-
Rogosa DR, Brandt D, Zimoski M (1982) A growth curve approach to the measurement of change. Psychology Bulletin 92(3): 726-748.
-
Adams RE, Boscarino JA, Galicia S (2006) Alcohol uses mental health status and psychological well-being two years after the World Trade Center attacks in New York City. Am J Drug Alcohol Abuse 32(2): 203-224.
-
Akaike H (1987) Factor analysis and AIC. Psychometrika 52: 317-332.
-
Brenner ND, Collins JL (1998) Co-occurrence health risk behaviors among adolescents in the United States. J Adolesc Health 22(3): 209-213.
-
Brown RA, Monte PM, Myers MG, Martin RA, Rivinus T, et al. (1998) Depression among cocaine abusers in treatment: Relations to cocaine and alcohol use and treatment outcomes. Am J Psychiatry 155(2): 220-225.
-
Buijs RM, De Vries GJ, Van Leuven FW, Swaab DF (1983) Vasopressin, and oxytocin: Distribution and putative functions of the brain. Prog Brain Res 60: 115-122.
-
Byrne BM (2010) Structural Equation Modeling with AMOS: Basic concept, applications, and programming 2nd (Edn). New York: Routledge, Taylor & Francis Group.
-
Byrne B, Shavelson R, Muthén B (1989) Testing for the equivalence of factor covariance and mean structures: The issue of partial measurement invariance. Psychol Bull 105(3): 456-466.
-
Calhoun HM, Song W, Poulier NR (1994) Blood pressure screening, management and control in England: Results from the health survey for England. J Hypertens 16(6): 747-752.
-
Carer AC, Obremski Brandon K, Goldman MS (2010) The college and non-college experience: A review of the factors that influence behavior among young adults. J Studies Alcohol Drugs 71(5): 742-750.
-
Carver RP (1978) The case against significance testing, revisited. The Journal of Experimental Education 61(4): 287-292.
-
(2004) The Annals of the American Academy of Political and Social Science 98: 591.
-
(2014) Alcohol use and public health: data, trends, and maps. Center for Disease Control and Prevention [CDC].
-
(2013) Youth risk behavior surveillance in system (YRBSS). Center for Disease Control and Prevention [CDC] 63(4): 1-168.
-
Cheung GW, Renwsvolt RB (2002) Evaluating goodness- of-fit indexes for testing measurement invariance. Structural Equation Modeling: A Multidisciplinary J 9(2): 233-255.
-
Churchill SA, Farrell (2017) Alcohol and depression: Evidence from the 2014 health survey for England. Drug Alcohol Depend 180: 86-92.
-
Cohen J (1994) The earth is round (p<0.05). American Psychologist 49(12), pp: 997-1003.
-
Coiro V, Vescovi PP (1995) Alcoholism abolishes the growth hormone response to sumatriptan administration in man. Metabolism 44(12): 1577-1580.
-
Coiri V, Vescovi PP (1995) Alcoholism abolishes the effects of melatonin on growth hormone secretion in humq
-
Corrao G, Rubbiati L, Bagnardi V, Zambo A, Poikolainen K (2000) Alcohol and coronary heart disease: a meta- analysis. Addiction 95(10): 1505-1523.
-
Costanzo S, Di Castelnuovo A, Donati MB, Iacoviello L, De Gaetano G (2010) Alcohol consumption and mortality in patients with cardiovascular disease: a meta-analysis. JACC 55(13): 1339-1347.
-
Cote J, Arnett J, Tanner J (2006) Emerging Adulthood as an Institutional Moratorium: Risk and Benefits to Identity Formation. Washington DC: American Psychological Association.
-
Cumming G, Jakeman C (2017) Introduction to the New Statistics: Estimation, Open Science, & beyond. New York: Routledge Taylor & Francis Group.
-
Daban C, Vieta E, Mackin P, Young AH (2005) The hypothalamic-pituitary-adrenal axis and bipolar disorder. The Psychiatr clin North Am 28(2): 469-480.
-
Davidson KM (1995) Diagnosis of alcohol dependence: change in the prevalence of drinking status. Br J Psychiatry 166(2): 199-204.
-
Di Castelnuovo A, Costanzo S, Bagnardi V, Donati MB, Iacoviello L, et al. (2006) Alcohol dosing and total mortality in men an women: an updated meta-analysis of 34 prospective studies. Arch Intern Med 166(22): 2437-2445.
-
De Marinis L, Mancini A, Fiumara C, Conte G, Iacona T, et al. (1993) Growth hormone response to growth-hormone- releasing hormone in early abstinence alcoholic patients. Psych neuroendocrinology 18(7): 475-183.
-
De Wied D, Diamant M, Fodor M (1993) Central nervous system effects on the neurohypophyseal hormone and related peptides. Front Neuroimmunoassay 14(4): 251- 302.
-
Doring D, Herzenstiel MN, Kample H, Jahn H, Pralle L, et al. (2003) Persistent alteration of vasopressin and N-terminal pro atrial natriuretic peptide [lasma level in long-term abstinent alcoholics. Alcohol Exp Res 27(5): 89-861.
-
Ehrenreich H, Tom Dereck K, Gefeller O, Kaw S, Schilling L, et al. (1997) Sustained elevation of vasopressin plasma level in healthy young men, but not in abstinent alcoholics, upon an expectation of novelty. Psych neuroendocrinology 22(1): 13-24.
-
Elkins IJ, McGue M, Iacono WG (2007) Prospective effect of attention-deficit/hyperactivity disorder, conduct disorder, and sex on adolescent substance use and abuse. Arch Gen Psychiatry 64(10): 1145-1152.
-
Ellis PD (2010) The Essential Guide to Effect Size. Cambridge University Press.
-
Ferguson CJ, Meehan DC (2011) With friends like these peer delinquency influences across age cohorts on smoking, alcohol, and illegal substance use. European Psychiatry 26(1): 6-12.
-
Fillmore KM, Stockwell T, Chikritzhs T, Bostrom A, Kerr W (2007) Moderate alcohol use and reduced mortality risk: a systematic error of prospective studies and a new hypothesis. Ann Epidemiol 17(5): 16-23.
-
(2019) Glossary of Terms for Nebraska Behavioral Health System 2006. Mental Health board Training Self- Study.
-
Goodman I, Badali PM, Henderson J (2011) Understanding substance treatment: The role of social pressure during the transition to adulthood. Addictive Behaviors 36(6): 660-668_._
-
Guillermo Ramos V, Lizardo HA, Jaccard J (2005) Prevention program for reducing problem behavior in adolescence: implication of the co-occurrence of problem behavior in adolescence. J Adolesc Health. 36(1): 82-86.
-
Herman JP (2012) Neural pathways of stress integration: Relevance to Alcohol Abuse. Alcohol Res 34(4): 441-447.
-
Hall J, Valente T (2007) Adolescent smoking networks: The effect of influence and selection on future smoking. Addictive Behaviors 32(12): 3054-3059.
-
Hill AK, Hunt J, Welling LLM, Cardenas RA, Rotella MA, et al. (2003) Quantifying the strength and form of sexual selection on men’s traits. Evolution and Human Behavior 34(5): 334-341.
-
Hoetler JW (1983) The analysis of covariance structures: Goodness-of-Fit Indices. Sociological Methods and Research 11(3): 325-344.
-
Huang R, Ho S, Wang M, Lam T (2016) Reported alcohol drinking and mental health problems in Hong Kong Chinese Adolescents. Drug Alcohol Dependence 164: 47- 54.
-
Insel TBR (2010) The challenge in translation in social neuroscience: A review of oxytocin, vasopressin and affiliative behavior. Neuron 65(6): 768-779.
-
(2010) Institute of Medicine committee on the Science of Adolescence Health the science of adolescence risk- taking workshop Summary_._ Washington, DC: National Academies of Press.
-
Isaac L, Michael WB (2014) Handbook in Research and Evaluation. EdIT Publisher San Diego: CA.
-
Jenkins JS, Connolly J (1968) Androcortical response to alcohol to ethanol in man. British Medical Journal_._ 2(5608): 804-805.
-
Karlamanla AS, Sarkisian CA, Kado DM, Dedes H, Liao DH, et al. (Gruenewald) Light to moderate alcohol consumption and disability: variable benefits by health status_._ Am J Epistemol 169(1): 96-104.
-
Kenny SR, Di Guiseppi GT, Meisel MK, Balestrieri SG, Barnett NP (2018) Poor metal health, peer drinking norms, and alcohol risk in a social network of first-year college students. Addict Behav 84: 151-159.
-
King A, Munisamy G, de Witt H, Lin S (2006) The attenuated cortisol response to alcohol in heavy social drinkers. International Journal of Psychophysiology 59(3): 203-209.
-
Kitzrow MA (2009) The mental needs of today’s college students: Challenges and recommendations. NASPA Journal 46(4): 646-660.
-
Klatsky AL, Udaltsova N (2007) Alcohol drinking and total mortality risk. Annals of Epistemology 17(5): 63- 67.
-
Koob GF (2008) A role for brain stress system in addiction. Neuron 59(1): 11-34.
-
Kwan MY, Arbour-Nicitopoulos KP, Duku E, Faulkner G (2016) Patterns of multiple risk behaviors in university students and their association with mental health: Application of latent class analysis. Health Promot Chronic Dis Prev Can 36(8): 168-170.
-
Lands WE (1999) Alcohol, slow-wave sleep, and somatotropic axis. Alcohol 18(2-3): 109-122.
-
Letenneur L (2004) Risk of Dementia and alcohol and wine consumption: a review of recent results. Biol Res 37(2): 189-193.
-
Little TD (1997) Mean and covariance structures (macs) analyses of cross-cultural data: Practical and theoretical issues. Multivariate Behavior Research 32(1): 53-76.
-
Lovell ME, Bruno R, Johnson A, Matthew A, McGregor I, et al. (2018) Cognitive, physical, and mental health outcomes between long-term cannabis and tobacco users. Addictive Behaviors 79: 178-188.
-
MacFadyen K, Loveless R, DeLucca B, Wardley K, Deogan S, et al. (2016) Peripheral oxytocin administration reduce ethanol consumption in rat. Pharmacol Biochem Behav 140: 27-32.
-
Matta SG, Beyer HS, McAllen KM, Sharp BM (1987) Nicotine elevates rat plasma ACTH by a central mechanism. J Pharmacol Exp Ther 243(1): 217-226.
-
McGregor IS, Bowen MT (2012) Breaking the loop: Oxytocin as a potential treatment for drug addiction. Horm Behav 61(3): 331-339.
-
Meredith W (1993) Measurement invariance, factor analysis, and factorial invariance. Psychometrika 58: 525-543.
-
Merikanggas KR, Gelernter CS (1990) Comorbidity of alcoholism and depression. Psychiatric Clinic of North America.
-
Mertler CA, Reinhart RV (2017) Advanced and Multivariate Statistical Methods: Practical Application and Interpretation. New York, Taylor & Francis.
-
Moller N, Jorgensen JO (2009) Effects of growth hormone on glucose, lipids, and protein metabolism in human subjects. Endocr Rev 30(2): 152-177.
-
Muthen IK., Muthen BO (1998) Mplus User Guide. 7th (Edn.), Los Angeles.
-
Myers B, McKlveen JM, Herman JP (2012) Neural regulation of stress response: The many faces of feedback. Cell Mol Neurobiol 32(5): 683-694.
-
Nachmias CF, Nachmias D (2008) Research methods in the social sciences. New York: Worth Publishing.
-
Non AL, Binder AM, Barault L, Rancourt RC, Kubzansky LD, et al. (2012) DNA methylation of stress- related genes and LINE-1 repetitive elements across the healthy human placenta. Placenta 33(3): 183-187.
-
O’Malley SS, Krishnan SS, Farren C, Sinha R, Kreek MJ (2002) Naltrexone decreases as alcohol self- administration in alcohol-dependent subjects and activates the hypothalamic-pituitary-adrenocortical axis. Psychopharmacology (Berlin) 160(1): 19-29.
-
Orlando M, Tucker PL, Ellickson JS, Klein DJ (2005) Concurrent use of alcohol and cigarettes from adolescence to young adulthood: an examination of developmental trajectories and outcomes. Subst Use Misuse 40(8): 1051-1069.
-
Oswald LM, Wong DF, McCaul M, Zhou Y, Kuwabara H, et al. (2005) Relationship between ventral striatal dopamine release, cortisol secretion, and subjective responses to amphetamine. Neuropsychopharmacology 30(4): 821-832.
-
Pariante CM, Lightman SL (2008) The HPA axis in major depression: classical theories and new developments. Trends in Neurosciences 31(9): 464-468.
-
Pelletier JE, Lytle LA, Laska MN (2016) Stress, Health Risk behaviors, and weight status among Community College Students. Health Educ Behav 43(2): 139-144.
-
Plosky PM (1991) Pathway to the secretion of adrenocorticotropin: A view from the portal. Journal of Neuroendocrinology 3(1): 1-9.
-
Prestage G, Jin F, Bavinton B, Hurley M (2014) Sex workers and their clients among Australian gay and bisexual men. AIDS Behav 18(7): 1293-1301.
-
Price JL, Mueller CW (1986) Handbook of Organization Research and Measurements, Longman Press: New York.
-
Rachdaoui N, Sakar DK (2018) Pathotopsdychiology of the effect of alcohol abuse on the endocrine system. Alcohol Res 38(2): 255-276.
-
Raju NS, Laffitte LJ, Byrne BM (2002) Measurement equivalence: A comparison of methods based on confirmatory factor analysis and item response theory. Journal of Applied Psychology 87(3): 517-529.
-
Regier DA, Farmer ME, Rae DS, Locke BZ, Keith SJ, et al. (1990) Comorbidity of mental disorders with alcohol and other drug abuse: results from the Epidemiologic Catchment Area (ECA) study. JAMA 264(19): 2511-2518.
-
Rehm J, Room R, Graham K, Monteiro M, Gmel G, et al. (2003) The relationship of average alcohol volume of consumption and pattern of drinking to burden of disease: an overview. Addiction 98(9):1209-1228.
-
Reise SP, Widaman KF, Pugh RH (1993) Confirmatory factor analysis and item response theory: Two approaches for exploring measurement invariance. Psychol Bull 114(3): 552-566.
-
Rivier C, Lee S (1996) Acute alcohol administration stimulates the activity of the Hypothalamic neurons that express corticotropin-releasing factor and vasopressin. Brain Research 726(1-2): 1-10.
-
Ronksley PE, Brien SE, Turner BJ, Mukumal KJ, Ghali WA (2011) Association of alcohol consumption with selected cardiovascular disease outcomes: a systematic review and meta-analysis. BMJ 342: 671.
-
Ross HE, Young LJ (2009) Oxytocin and neural mechanisms are regulating cognitive and affiliative behavior. Front Neuroendocrinol 30(4): 534-547.
-
Sakar DK, Gibbs DM (1984) Cyclic variation of oxytocin in the blood of pituitary portal vessels of rats. Neuroendocrinology 39(5): 481-483.
-
Schuster RM, Crane NA, Mermelstein R, Gonzalez R (2012) The influence of inhibitory control and episodic memory on the risky sexual behavior of young adult cannabis users. J Int Neuropsychol Soc 18(5): 827-833.
-
Scriber R, Theheal KP, Simonsen N, Robinson W (2010) HIV risk and the alcohol environment: Advancing ecological epidemiology for HIV/AIDS. Alcohol Res Health 33(3): 179-183.
-
Skogen C, Hudsen AK, Mykletun A, Nesag S, Overland S (2012) Alcohol consumption, problem drinking, abstention, and disability pension award. The Nord- Torndelag Health Study. Addiction 107(1): 98-108.
-
Stephens MAC, Ward G (2018) Stress and the HPA axis: Role of Glucocorticoids in alcohol dependence. Alcohol Res 34(4): 468-483.
-
Stoop R (2014) Neuromodulation by oxytocin and vasopressin in the central nervous system as a basis for their rapid behavioral effects. Curr Opin Neurobiol 29: 187-193.
-
Rockville MD (2009) Substance Abuse and Mental Health Services Administration (SAMHSA) Results from the 2008 National Survey on Drug Use and Health: National Findings (NSDUH Series H-36, HHS Publication No. SMA 09-4434).
-
Teresi JA (2006) Different approaches to differential item functioning in health applications: Advantages, disadvantages, and some neglected topics. Medical Care Journal 44(11S3): 152-170.
-
Thayer JF, Hall M, Soller JJ, Fischer JE (2006) Alcohol use, urinary cortisol, and heart rate variability in apparently healthy men: Evidence for impaired inhibitory control of the HPA axis in heavy drinkers. Int J Psychophysiol 59(3): 244-250.
-
Thurstone LL (1947) Multiple-Factor Analysis. Chicago: University of Chicago Press, Chicago.
-
Uhart M, Oswald M, McCaul ME, Chong R, Wand GS (2006) Hormonal response to psychological stress and family history of alcoholism. Neuropsychopharmacology 31(10): 2255-2263.
-
Upmark M, Moller J, Romelsjo A (1999) A longitudinal population-based study of self-reported alcohol habits, high level of sickness absence, and disability pension. J Epistemol Community Health 53(4): 223-229.
-
Valimaki M, Pelknen R, Harkonen M, Ylikahri R (1984) Hormonal changes in noncirrhotic male alcoholics during ethanol withdrawal. Alcohol and Alcoholism 19(3): 235-242.
-
Van Cauter E, Latta F, Ndeltcheva A, Spiegel K, Leproult R, et al. (2004) The reciprocal interaction between the G.H. axis and sleep. Growth Horm IGF Res 14: 10-17.
-
Verbalis JG (1993) Osmotic inhibition of neurohypophysial secretion. Ann NY Acad Sci 689: 146- 160.
-
Wang J, Wang X (2012) Structural Equation Modeling Application Using Mplus. 2nd (Edn.) Chichester: John Wiley & Sons Ltd.
-
Widaman KF (1993) Common Factor Analysis Versus Principal Components Analysis: Differential Bias in Representing Model Parameters? Multivariate Behav Res 28(3): 263-311.
-
Willett JB, Sayer AG (1996) Cross-Domain analysis of change over time: Combining growth modeling and covariate structure analysis. In Modeling: Issues and Techniques, pp: 125-157.
-
Wu CY, Wu YS, Lee JF, Huang SY, Yu L, et al. (2008) The association between DRD2/ANKK1, 5_HTTLPR gene, and specific personality trait on antisocial alcoholism among Han Chinese in Taiwan. Am J Med Genet B Neuropsychiatr Genet 147B(4): 447-453.
-
Wynne O, Sakar DK (2013) Stress neuroendocrine- immune interaction: A therapeutic role of B-endorphin. _In_: Kusnecov AH (Eds.), the Wiley-Blackwell Handbook of Psychoneuroimmunology. Oxford: Oxford Blackwell, pp: 198-211.
-
Yegidis BL, Weinbach RW, Myers LL (2018) Research Methods for Social Workers. 8th (Edn.), Publishers, New York.
-
Zimmermann U, Spring K, Knuz-Ebrecht SR, Uhr M, Wittchen HU, et al. (2004) Effect of ethanol on hypothalamic-pituitary-adrenal system response to psychosocial stress in sons of alcohol-dependent fathers. Neuropsychopharmacology 29(6): 1156-1165.
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