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- Title
Reliability and Responsiveness of the Gross Motor Function Measure-88 in Children With Cerebral Palsy.
- Authors
Jooyeon Ko; Minyoung Kim
- Abstract
Background. The Gross Motor Function Measure (GMFM-88) is commonly used in the evaluation of gross motor function in children with cerebral palsy (CP). The relative reliability of GMFM-88 has been assessed in children with CP. However, little information is available regarding the absolute reliability or responsiveness of GMFM-88. Objective. The purpose of this study was to determine the absolute and relative reliability and the responsiveness of the GMFM-88 in evaluating gross motor function in children with CP. Design. A clinical measurement design was used. Methods. Ten raters scored the GMFM-88 in 84 children (mean age_3.7 years, SD_1.9, range_10 months to 9 years 9 months) from video records across all Gross Motor Function Classification System (GMFCS) levels to establish interrater reliability. Two raters participated to assess intrarater reliability. Responsiveness was determined from 3 additional assessments after the baseline assessment. The interrater and intrarater intraclass correlation coefficients (ICCs) with 95% confidence intervals, standard error of measurement (SEM), smallest real difference (SRD), effect size (ES), and standardized response mean (SRM) were calculated. Results. The relative reliability of the GMFM was excellent (ICCs_.952-1.000). The SEM and SRD for total score of the GMFM were acceptable (1.60 and 3.14, respectively). Additionally, the ES and SRM of the dimension goal scores increased gradually in the 3 follow-up assessments (GMFCS levels I and II: ES_0.5, 0.6, and 0.8 and SRM_1.3, 1.8, and 2.0; GMFCS levels III-V: ES_0.4, 0.7, and 0.9 and SRM_1.5, 1.7, and 2.0). Limitations. Children over 10 years of age with CP were not included in this study, so the results should not be generalized to all children with CP. Conclusions. Both the reliability and the responsiveness of the GMFM-88 are reasonable for measuring gross motor function in children with CP.
- Subjects
MOTOR ability; CEREBRAL palsy; CONFIDENCE intervals; RESEARCH methodology; PHYSICAL therapy for children; RESEARCH evaluation; SCALES (Weighing instruments); STATISTICS; EFFECT sizes (Statistics); INTER-observer reliability; RESEARCH methodology evaluation; DATA analysis software; DESCRIPTIVE statistics
- Publication
Physical Therapy, 2013, Vol 93, Issue 3, p392
- ISSN
0031-9023
- Publication type
Article
- DOI
10.2522/ptj.20110374