The Relationship between the Spasticity-Related Pain and the Quality of Life about the Cerebral Palsy in China
<p>Purpose: Children and adolescents with cerebral palsy suffered from spastic pain that affected their quality of life. The purpose of this study was to examine the relationship between the spasticity-related pain and the quality of life about the children with cerebral palsy with spasticity-related pain in China. Methods: This was a prospective, observational, one-arm multicentre study. 137 cerebral palsy children with SRP and their parents/caregivers were recruited from three sites in China. The children and their parents/caregivers completed the Questionnaire on Pain Caused by Spasticity and PedsQL TM 4 scale. Results: 137 children with their parents/caregivers were eligible for participation in the study, and all completed the relevant investigation. According to the result of the children-report PedsQL, the total scale scores in the V2/V3 about the different age groups (5-7years old ,8-12 years old, 13-16 years old ) had no statistic significance((P > 0.05). After 3 weeks, the change compared to first time survey result was not significant (p>0.05). The total scores and each domain of PedsQL in the CP with SRP was lower than the normal group (P<0.05). On the whole, the associations between the child and parent proxy-report QPS total scores and each domain scores of PedsQL were moderate to high. The PedsQL total scores relationship to the QPS item score was moderate. Conclusion: The quality of life in the CP patients with SRP was worse than normal people and it was a steady long-term stage. The correlation between the spasticity-related pain and the quality of life was moderate to high and negative and the result from the parent proxy-report was more evident.</p>
Background
Cerebral palsy (CP) is defined as a group of permanent disorders of the development of movement and posture, causing activity limitation, attributed to non-progressive disturbances occurring in the developing fetal or infant brain [1]. Lesions to the sensorimotor cortex, subcortical axon tracts, and subplate are often implicated, with other motor and non-motor areas frequently also affected. The etiology is complex and often multi-factorial; causes include hypoxia, stroke, infection, trauma, and genetic factors [2, 3]. The difference of the incidence of cerebral palsy in developed countries had no significance. Reported by 14 CP research centers in Europe, the incidence was about 2~3%. And the WHO reported that the incidence was 2.2%, and the latest reports in China showed that the incidence was about 2.1% [4, 5]. Cerebral palsy (CP) syndromes were character by impaired motor function. Most children with this development disorder also suffered from sensory, communicative, and intellectual impairments and might have complex limitations in self-care functions. Although care-giving was a normal part of being the parent of a young child, this role may take on an entirely different significance when a child experienced functional limitations and possible long-term dependence [6]. At least 60% of the adults with spastic bilateral cerebral palsy had difficulties with mobility, recreation and housing, and 44% had difficulty with personal care and employment. A significant number of adults with spastic bilateral cerebral palsy encountered difficulties in social participation and had a low perceived health-related quality of life in physical functions [7, 8]. In China, several researches about the quality of life in the children with cerebral palsy and their parents, using the PedsQLTM4.0 and SF-36 scale, showed that the four domains (physiological function, emotional function, social function, school function) and total scores of PedsQL were lower than that of the normal group(P < 0.05), and that the scores of SF-36 about the body pain, general health, vitality, social function, mental function and the total score were lower than that of normal group (P < 0.01) [9, 10]. Spastic pain was a serious complication of cerebral palsy which made the children with CP suffered [11]. The spasticity was due to the central motor neurons
destruction lead to the muscle which was under the
control of lower neurons excessive contraction. Spasm
can maintain the children' posture, which was positive,
but excessive spasm would limit children’ daily activities,
lead to joint deformity and hand functional abnormalities.
According to a latest report, 50% of patients with cerebral
palsy suffered from pain, making about 25%, who should
be able to walk, back to the wheelchair. So the spasticity
seriously influenced children' quality of life [12]. Beside
the physiological effects, pain in individuals with cerebral
palsy was responsible for the reductions of psychological
of health-related quality of life [13].
Spastic pain, as the most important symptoms of
cerebral palsy, recently becomes popular in the
researches about its pathology and treatment. And as we
known, botulinum toxin had made a very great progress
in the study of spastic pain caused by spasm, and could
improve the quality of life of cerebral palsy children.
Researchers showed that botulinum toxin injection could
improve the posture in the sitting position and facilitates
the fitting of orthotic devices [14, 15]. Rivard PF [16]
found that overall parent ratings of their children’ pain
were significantly reduced after botulinum toxin [6, 16]. A
injection, parents of 62% cases reported the absence of
pain 1 month after injection (proportion=0.38; 95%
$$ \text{confidence interval} = 0.23 - 0.55). $$
multicentre. Aims of study:
a) To assess QoL of the cerebral palsy children with spasticity-related pain, reported by both children and their parent or caregivers. b) To investigate the change of quality of life before and after 3 weeks. c) To study the relationship between the quality of life and the spasticity-related pain.
Methods
Procedure and participants
This was a prospective, observational, one-arm multicentre study. 137 cerebral palsy children with spasticity-related pain and their parents/caregivers were recruited from three sites in China (Nanhai Affiliated Maternity and Children Hospital of Guangzhou University of Traditional Chinese Medicine; The Maternity and Child Health care Hospital of Dongguan; Xiang YaBoAi Rehabilitation Hospital).The three sites recruited both from their inpatient caseload and their outpatient caseload. The subjects experienced intermittent SRP and Journal of Natural & Ayurvedic Medicine
had a clinical diagnosis of spasticity and active treatment or medication of spasticity. Caregiver or parents had regular (at least daily) contact with the subject to be able to report on the observed SRP behaviors. The investigator considered in advance whether the subject and caregivers were able to attend the scheduled visits as planned. The study participant was asked to take part in a Screening process (V1), a Baseline assessment process (V2), and an End of Study follow up assessment (V3). In fact, the Screening and Baseline measures ended up being obtained for all subject during the same day directly after another. Therefore, two and not three three separate study visit were performed by all participants: the Screening/Baseline Visit (V1/2) and the End of Study Visit (V3). The End of Study Visit was to be scheduled 3 weeks (21±3day) following the Baseline assessment (V2) (Table 1).
- Screening
- End of
- /Baseline
- Study
- Visit V1/ V2 Visit V3
- Measurement event (Day 1)
- (Day
- 21±3)
- Informed Consent
- X
- Inclusion/Exclusion Criteria
- X
- Demographics & Medical History
- X
- Description of Cognitive Abilities
- X
- Cerebral Palsy-Related Therapies
- X
- X
- Questionnaire on Pain caused by Spasticity (QPS)
- X
- X
- Key problems & ease of use of
- Questionnaire
- X
- X
- Pediatric Quality of Life Inventory
- TM (PedsQL TM)
- X
- X
- Intelligence and Cognitive function questionnaires
- X
- X
Table 1: The schedule of the study assessments.
• Male or female child or adolescent (minimum age 2
years; maximum age 17 years).
- Child/Adolescent has either uni- or bilateral CP.
- Child/Adolescent has UL and/or LL spasticity.
- Child/Adolescent has presence of intermittent SRP in either the ULs and/or LLs.
- SRP must be experienced by the child/adolescents at least on a weekly basis.
- Ashworth Score of≥1 in one of the following clinical patterns (uni- and/or bilateral) of the child/adolescents in which SRP is experienced: pes equinus, adducted thigh, flexed knee, flexed elbow,or flexed wrist.
- Child/adolescent received continuous anti-spastic treatment and/or medication.
- The caregiver has an understanding of the nature of the study and the study procedures and is willing to participate in the study and consent to their child’s participation in the study.
Exclusion criteria
- Child/Adolescent has fixed contractures (defined as severe restriction of the range of joint movement on passive stretch in the target clinical pattern(s)).
- Child has predominant forms of muscle hypertonia other than spasticity (e.g., dystonia) in the target limb(s) of the children/adolescents.
- Child/Adolescent has constant SRP or chronic pain due to other reasons (e.g. hip edslocation/subluxation over very long time periods).
- Child/Adolescent has had surgery in the LLs and/or ULs within past 12 months.
- Child/Adolescent has indication for orthopedic surgery within the next 2 months.
- Child/Adolescent has pure dyskinetic CP or mixed CP with predominantly dyskinetic (dystonic or choreo- athetotic), ataxic (hypotonic), or mixed CP with predominantly dyskinetic or ataxic movements.
- Child has any other comorbid condition that in the opinion of the clinician would confound the study results on the experienced SRP.
- Child has participated in a therapeutic clinical study within the last 12 week prior to the screening visit 1 (V1) or ongoing participation in a study.
Questionnaire on Pain Caused by Spasticity (QPS)
The QPS is the primary study assessment of this study and will be administered at visit 2 (V2) and visit 3 (V3). The questionnaire is a PRO for children and adolescents (2-17 years) with CP and SRP with an ObsRO for their caregiver. The QPS consists of six modules. A self-report version for the children/adolescent (11 items), an interview-version for the children/adolescent (11 items), and a proxy-report version for the parent(s)/caregiver (12 items) are each available for UL and LL SRP assessment. While pain intensity is reported by the child/adolescent, pain frequency based on observed pain behaviors are documented by the parent(s)/caregiver(s). Thus, the information provided by children/adolescents complements with that of the parent(s)/caregiver(s). Pain intensity and frequency of the QPS are assessed for general pain and for four different activity situations. The situations are described in different questions at rest, normal day activities, physical exercise and for an individual defined very hard thing to do for the children/adolescents. It is first asked for each situation whether pain occurred (Yes/No) and then how pain severity was experienced on the 6-point Wong-Baker FACES® scale by the children or adolescents or how pain frequency was observed by the caregivers by using a 5- point response scale (0 = never–4 = always) [20] (Table 2).
| Child/adolescent modules (upper and lower | |||||||
|---|---|---|---|---|---|---|---|
| Parent/caregiver modules (upper and lower extremity) | |||||||
| extremity) | |||||||
| Targeted symptom concepts | Item | Targeted symptom concepts | Item | ||||
| Spasticity | 1 | Spasticity (observed) | 5 | ||||
| General spasticity-related pain (SRP) | 2 | General SRP (verbalization) | 6 | ||||
| General SRP severity | 3 | General SRP (observed signs) | 7 | ||||
| SRP while at rest | 4 | General SRP observed frequency | 8 | ||||
| SRP while at rest severity | 5 | SRP while at rest (observed signs) | 9 | ||||
| SRP during usual activities | 6 | SRP while at rest observed frequency | 9b | ||||
| SRP during usual activities severity | 7 | SRP during usual activities (observed signs) | 10 | ||||
| SRP during active mobilization | 8 | SRP during usual activities observed frequency | 10b | ||||
| SRP during active mobilization severity | 9 | SRP during active mobilization (observed signs) | 11 | ||||
| SRP during difficult activity | 11 | SRP during active mobilization observed frequency | 11b | ||||
| SRP during difficult activity severity | 12 | SRP during difficult activity (observed signs) | 13 | ||||
| SRP during difficult activity observed frequency | 13b |
Table 2: Concepts in spasticity-related pain in the QPS.
Data Quality Assurance
The initial step in assuring the quality of the data was to institute a training session of the assessment staff at all three sites. A day was established at the start of the study to have the lead site investigators and 3-4 of the key meet together at one hospital site. The Principal Investigator at the Naihai site is an expert in the field of working with children and was responsible for assuring that all tests and evaluations were performed according to appropriate standards and methods and methods at their own site and observed the tests being performed at the other two sites in order to achieve comparable quality and consistency.
Statistical Analysis
Descriptive statistics (mean, standard deviation, and range for quantitative variables; frequency and percentage for categorical variables) were presented for children and their parent’s demographic variables and the Journal of Natural & Ayurvedic Medicine
score of the PedsQL. The scores of quality of life in the cerebral palsy were analyzed using independent sample t tests and the scores change were used the paired sample test. Pearson or Spearman correlations were used to determine the associations between quality of life and the QPS. All statistical tests were two-tailed, and p <0.05 was regarded as being statistically significant.
Ethics Conduct of the Study
This study was conducted in accordance with the ethics principles that have their origin in the Declaration of Helsinki, and are consistent with ICH-GCP requirements and the ethics committee standards for China. All parents gave written informed consent and the permission for their children to participate prior to inclusion in the study.
Results
Demographics & Descriptive Analyses
Of 137 patients and their parents/caregiver (planed 135cases, actuall137) eligible for participation in the study, and completed the relevant investigation. By site, enrollment was 21subjects in Dongguan, 56 subjects in Nanhai, and 60 subjects in Hunan. The mean age of the participants was 6.6 years (SD 3.2 years, range 0-17.5). Gender distribution was even to 94 boys (68.6%) and 93% were Chinese. Their level of education was in the elementary school stage. The average age of diagnosis of CP and spasticity type is 1.8 years (SD 1.7 years,range 0.1- 10) and 1.9 years (SD 1.6 years, range 0.1-10 ). The premature delivery (51%) and the lack oxygen was the most important causation of CP. The bilateral LL spasticity (N=117, 85% ) is the most common type; The UL spasticity (N=10, 7% ) usually was associated with LL spasticity. About the FMFCS-E&, Class I(27, 19.7%), Class II ( 46, 33.6% ), Class III(29, 21.2%), Class IV(13, 9.5%), Class V(22, 16.1%); MACS Class I( 40, 29.2%), Class II (49, 35.8%), Class III (30, 21.9%), Class IV( 10, 7.3%), Class V (4, 2.9%), missing(4, 2.9%) (Table 3). The mean age of the parents/caregivers was 39.6 years (SD 11 years, range 24.9-69.1). Gender distribution was 114 female (83.2%) and 90.5% were married. The situation of their education was elementary school (23.4%), high school (54.7%), and university (21.9%). Most of them quit the job and take care of their children all dayf in the rehabilitation institution, about 69(50.4) not employed, 29(21.2) employed full time, not employed outside the home (homemaker) 26(19.0), employed part time 8(5.8), retired 5(3.6).
| Item | N=137 | ||||
|---|---|---|---|---|---|
| Age | 6.6(3.2,2.0-17.5) | ||||
| Gender n (%) | |||||
| Female | 43(31.4) | ||||
| Male | 94(68.6) | ||||
| Education (highest grade completed ) | 0.5(1.4,0-10) | ||||
| Education category | |||||
| Elementary school | 136(99.3) | ||||
| High school | 1(0.7) | ||||
| Ethnic group | |||||
| Chinese | 128(93.4) | ||||
| Non-Chinese | 9(6.6) | ||||
| Age at CP diagnosis | 1.8(1.7,0.1-10) | ||||
| Age at spasticity diagnosis | 1.9(1.6,0.1-10) | ||||
| Main cause of CP | |||||
| Premature delivery | 70(51.1) | ||||
| Lack oxygen | 46(33.6) | ||||
| Low birth weight | 13(9.5) | ||||
| Brain condition | 9(6.6) | ||||
| Reason unclear | 12(8.8) | ||||
| Other cause | 25(18.2) | ||||
| FMFCS-E&R | |||||
| Class I | 27(19.7) | ||||
| Class II | 46(33.6) | ||||
| Class III | 29(21.2) | ||||
| Class IV | 13(9.5) | ||||
| Class V | 22(16.1) | ||||
| MACS | |||||
| Class I | 40(29.2) | ||||
| Class II | 49(35.8) | ||||
| Class III | 30(21.9) | ||||
| Class IV | 10(7.3) | ||||
| Class V | 4(2.9) | ||||
| missing | 4(2.9) | ||||
| Limb spasticity identification | |||||
| Bilateral upper | 7(5.1) | ||||
| Unilateral upper-R | 3(2.2) | ||||
| Bilateral lower | 84(61.3) | ||||
| Unilateral lower-R | 1(0.7) | ||||
| Bi lower + bi upper | 29(21.2) | ||||
| Lower-R + upper-R | 5(3.6) | ||||
| Lower-L + upper-L | 4(2.9) | ||||
| Bi lower + uni upper-L | 4(2.9) |
Table 3: Demographic characteristic CP children.
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| V2 | V3 | V2/V3 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Item | N | |||||||||||||||||
| Mean(SD) | Median(Range) | Mean(SD | ) | Median(Range) | Change Mean(SD) | |||||||||||||
| Total Scale Score(5-7) | 71 | 54.4(13.2) | 54.3(15.2-80.4) | 54.0(13.3) | 56.6(15.2-80.4) | -0.2(3.4) | ||||||||||||
| Total Scale Score(8-12) | 21 | 49.2(11.7) | 50(29.3-66.3) | 50.4(12.5) | 50(29.3-70.7) | 1.2(2.8) | ||||||||||||
| Total Scale Score(13-18) | 7 | 55.6(14.5) | 60.9(26.4-66.7) | 56.9(15) | 60.9(27.8-69.4) | 1.3(1.3) | ||||||||||||
| CHILD(Combined) | ||||||||||||||||||
| Physical Functioning | 99 | 40.1(20.3 | 37.5(0-87.5) | 41.2(21 | 39.1(0-87.5) | 1.3(5.6) | ||||||||||||
| Emotion Functioning | 99 | 70.9(15.5) | 70(30-100) | 70.1(15.4) | 70(30-100) | -0.8(5.4) | ||||||||||||
| Social Functioning | 99 | 58.3(19.2) | 60(20-100) | 58(19.2) | 60(20-100) | -0.4(6) | ||||||||||||
| School Functioning | 80 | 52.9(20.9) | 55(0-100) | 52.1(19.9) | 50(0-100) | -0.4(6) | ||||||||||||
| Psychosocial Functioning | 99 | 61.5(13) | 63.3(23.3-95) | 60.8(12.8) | 63.3(23.3-100) | -0.5(3.9) | ||||||||||||
| Total Scale Score | 99 | 53.4(13) | 54.3(15.2-80.4) | 53.5(13.2) | 55.1(15.2-80.4) | 0.2(3.3) |
Table 4: The V2/V3 standardized T-scores on health-related quality of life domains in individuals with cerebral palsy (CP) as ass
Table 4: The V2/V3 standardized T-scores on health-related quality of life domains in individuals with cerebral palsy (CP) as assessed by the children. Note: V2 and V3 was conducted paired sample T test, all the result have no significance (P > 0.05). The total scores of different age group were conducted one-way ANOVA, the result: p-v2=0.25,p-v3=0.43. According to the result of the children-report PedsQL, the total scale scores in the V2/V3 about the different age groups (5-7years old ,8-12 years old, 13-16 years old) had no statistic significance((P > 0.05). After 3 weeks, the change about two time survey result was not significant (p>0.05), and the range of the total scale and domain scores was from 0.4 to 1.3 (Table 4).
The result from the parent proxy-report PedsQL was similar to the children-report. Compared to the data by the parent proxy-report PedsQL from the Chinese normal group (mean age 6.04 years,SD 3.09 years, range 2-12 years, 68 male, 32 female), we found that total scores and each domain of quality of life on CP with SRP is lower(P<0.05) (Table 5).
| V2/V3Change | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Item | N | V2 Mean(SD) | V3 Mean(SD) | N (Normal) | Mean(SD) | |||||||||||||
| Mean(SD) | ||||||||||||||||||
| Physical Functioning | 136 | 34.7(20.6) | 35.2(20.9) | 0.3(4.5) | 100 | 95.89(8.63)* | ||||||||||||
| Emotion Functioning | 136 | 63.3(13.3) | 63.6(12.8) | 0.2(5.5) | 100 | 96.34(4.16)* | ||||||||||||
| Social Functioning | 136 | 46.4(16.8) | 46.7(17.2) | 0.2(5.2) | 100 | 88.6(7.88)* | ||||||||||||
| School Functioning | 90 | 39.9(23.9) | 39.7(23.8) | -0.3(5.6) | 100 | 87.39(11.22)* | ||||||||||||
| Psychosocial Functioning | 136 | 51.8(13.4) | 52(13.2) | 0.1(4.2) | 100 | 89.63(7.85)* | ||||||||||||
| Total Scale Score | 136 | 45.1(13.8) | 45.4(14) | 0.2(3.4) | 100 | 87.39(11.22)* |
Table 5: The V2/V3 of the CP with SRP and normal group standardized T-scores on health-related quality of life as assessed by the
Table 5: The V2/V3 of the CP with SRP and normal group standardized T-scores on health-related quality of life as assessed by the parents/caregivers. Note: The normal group quality of life date was provided by Dr. Zhenhuan Liu.V2 and V3 was conducted paired sample T test all ,all the result have no significance (P > 0.05). * p value is significant at the 0.05 level (2-tailed). On the whole, the associations between the child and parent proxy-report QPS total scores and PedsQL each domain scores were moderate to high. But the relationship of different QPS version and PedsQL scores was very different. The first one, most LL/UL parent proxy-report QPS category reach the significance at P<0.01, compared to the LL/UL child QPS category. The second is larger group the LL Child/parent QPS category reach the significance at P<0.01, compared to the UL Child/parent QPS category. However, even for the UL QPS modules, high correlation coefficients are evident, although not reaching always significance. All the correlation between school function and six QPS modules is mild and not reach significance (Table 6).
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| (self) child | (interviewer) | (interviewer) | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PedsQL | ( | self) child uppe | r | parent lower | parent uppe | r | ||||||||||||||
| lower | child lower | child upper | ||||||||||||||||||
| Combined | extremities | extremities | extremities | |||||||||||||||||
| extremities | extremities | extremities | ||||||||||||||||||
| Physical Functioning | -0.191 | 0.006 | -0.616** | -0.816 | -0.462*** | -0.151 | ||||||||||||||
| Emotion Functioning | -0.081 | -0.321 | -0.464* | -0.951** | -0.144*** | -0.342 | ||||||||||||||
| Social Functioning | -0.343** | -0.247 | -0.56** | -0.713 | -0.427*** | -0.472*** | ||||||||||||||
| School Functioning | -0.237 | 0.127 | -0.464 | a | -0.176 | -0.375 | ||||||||||||||
| Psychosocial Functioning | -0.323** | -0.274 | -0.641** | -0.876 | -0.310*** | -0.486*** | ||||||||||||||
| Total Scale Score | -0.325** | -0.136 | -0.685** | -0.861 | -0.441*** | -0.375** |
Table 6: The QPS total scores relation to the each domain of PedsQL TM. Note: PEARSON CORRELATIONS (Spearman coefficients were al
Table 6: The QPS total scores relation to the each domain of PedsQL TM. Note: PEARSON CORRELATIONS (Spearman coefficients were also examined with similar results) * Correlation is significant at the 0.05 level (2-tailed). Correlation is significant at the 0.01 level (2-tailed). * Correlation is significant at the 0.001 level (2-tailed). Cannot be computed because at least one of the variables is constant. The relationship between PedsQL total scores and the QPS item score was moderat, which presented for the five daily situation (QPS-3 for the general SRP severity, the QPS-5 for SRP at rest, the QPS-7 for SRP at activity, QPS-9 for SRP at mobilization, QPS -12 for SRP at doing hard activity). It had similar result above. The the parent proxy-report PedsQL total scores always reach the significance at five situation (P<0.01), compared to the child version.The correlation of LL PedsQL total scores and the five situation was more significant than that of UL (Table 7).
| PedsQL total scale scores | QPS-3 | QPS-5 | QPS-7 | QPS-9 | QPS-12 | ||||||||||||
| (self) child lower extremities | -0.026 | -0.091 | -0.266* | -0.25* | -0.238 | ||||||||||||
| (self) child upper extremities | -0.055 | 0.187 | 0.063 | -0.149 | -0.148 | ||||||||||||
| (interviewer) child lower extremities | -0.222 | -0.565** | -0.447* | -0.512* | -0.708*** | ||||||||||||
| (interviewer) child upper extremities | -0.617 | -0.744 | -0.886 | -0.744 | -0.974* | ||||||||||||
| parent lower extremities | -0.359*** | -0.410*** | -0.189* | -0.374*** | -0.404*** | ||||||||||||
| parent upper extremities | -0.487*** | -0.284* | -0.248 | -0.402** | -0.236 |
Table 7: The QPS item scores relation to the total scores of PedsQL TM.
Discussion
Cerebral palsy with spasticity-related pain was a chronic and non-progressive disease. As most of the normal population research, these children' quality of life become very complicated, due to various physiological and psychological factors. These may be the interacting factors from themselves, or the outside factors from the social environment and other people’s thought [21, 22].
Comparing the PedsQL scores of CP with SRP to the general population in China showed that each domain and total scores was generally lower than that of normal children. This result was similar to the previous research [10, 23]. But emphasizing all the CP population, these researches’ inclusion standard was very different to our study which was focus on the CP with SRP. Beside the spastic type CP, they also included the other types such as athetosic type and the ataxia type CP. According to a Journal of Natural & Ayurvedic Medicine
cross-sectional survey in Europe, it was a growing recognition that pain was a significant problem for children and adolescents with CP. More than 50% of children with CP suffered from pain from moderate to severe intensity everyday and at many parts of body [24, 25]. So, the spastic pain was a serious problem of CP, and the children would always had the physical and psychological feeling of discomfort in the daily life because of the long-term existing of the pain. Ramstad K reported that recurrent muscle pain was associated with reduced accomplishment of daily activities (B=-1.22, p=0.02) and social roles (B=-1.17, p=0.03), and with reduced parental satisfaction with the accomplishment of daily activities (B=-1.14, p=0.03) and social roles (B=- 1.48, p<0.01) [26]. The main aim of the study was to analyze the correlation between the spastic pain in the cerebral palsy and their quality of life. As the discussion above, most CP quality of life was effected by spastic pain, but how the spastic pain affected the different aspects of the quality of the life? In the study, the child and parent proxy version QPS were used and correlation was found with each domain scores and total scores of the PedsQL. Most the LL/UL parent proxy-report QPS category reached the significance, compared to the LL/UL child QPS category. But the correlation between LL QPS and the PedsQL was more evident, according to the LL/UL child QPS category. This may be caused by excessive protect thought on their children in China [27]. A study that assessed the relationship between parental distress and proxy- reported QOL for children with CP had a similar conclusion and that suggested that the parents' psychological state should also be measured when using parent proxy [28]. It is particularly important if proxy- reported QOL was the only available data. A survey about the quality of life of children and their parents in Europe found similar problem. They found the mean child- reported scores of quality of life were significantly higher than the parent proxy reports [29]. In our study, UL child QPS category total scores had a high correlation with each domain and the total scores of the PedsQL, but do not reach the significance. The result differed to most previous research [30, 31]. Reviewing the study, we found that the research of CP differ to the adult stroke, and the lower limb problem was more serious and common than that of upper limb. Besides, patients with lower extremities accounted for most in this study, so the study was more representative for the lower limb CP. The lower limb spastic pain had moderate correlation with the physical, emotional, psychological, social function , and the result was similar to most research [6, 23]. But the correlation with the school function did not reach the significance which was caused by CP rehabilitation and education mode in China. Most time of the children was spend in the hospital, so the general school function was relatively poor. As the discussion above, the correlation was moderate between the different situation and the total scores from the parent proxy-report PedsQL, and most of them reached the significance. Compared to the UL children report PedsQL, the LL had higher correlation with the these situations at activity/ mobilization/dong hard activity and their significance reached 0.001. But the correlation with the situation at rest was not evident which was inconsistent with previous research results. Most the research confirmed that the participation in leisure activities had a positive effect on the QOL of the children and adolescents with CP [32]. The conclusion was not always fit to the situation of CP children with SRP. Resting may had a positive effect on the CP, but it is was very difficult for them to keep the posture of sitting and walking. On the contrary, when they try to finish the daily activity, they would felt the limitation from the spastic pain and these would lead to the negative influence to their mental health [33]. This was also in agreement with previous studies with self-reports and proxy-reports from parents showed that pain affected the emotional and psychological wellbeing in individual with CP [34, 35]. CP is a chronic disease and its quality of life was a steady-state process. In this study, we found that, the results were very close and had no statistical significance between previous and post survey in the children or parents proxy-report PedsQL. So we should pay serious attention to the CP with SRP whether we had some good treatment to improve their quality of life or not. Assis TR had conducted a study to analyze quality of life (QOL) of children with CP treated with botulinum toxin type A. Sixty-eight patients were evaluated. The functional ability had improvement for all types of CP (p=0.04) [36]. This study has some limitations that must be taken into account for interpretation of results. The analysis of spastic pain and health-related quality of life in children and adolescents with cerebral palsy is base on the date from three sites in China ,but the cases from the three sites is different, then, it would reduce the representativeness of the general CP population with SRP.
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