• Wei Shi, Hong Yang, Chu-yang Li, Mei-qin Zhou, Mo Zhu, Yi Wang, and Xu Qian.
• Rehabilitation Department, Children's Hospital of Fudan University , Shanghai , China .
• Disabil Rehabil. 2014 Jan 1; 36 (5): 403-8.

PurposeTo determine the reliability and validity of the Chinese version of Expanded and Revised Gross Motor Function Classification System (GMFCS-ER) for cerebral palsy (CP) and to explore if there existed differences between parents and the other raters.MethodThe GMFCS-ER was translated into Chinese. Children with CP age 6 to 18 years from two special education schools were assessed by 6 physiatrists, 21 physiotherapists, 15 teachers and parents. Inter-rater reliability was analyzed with inter-rater correlation coefficients (ICC). Validity was assessed using Gross Motor Function Measure (GMFM) score as the criterion standard.ResultsMean (SD) age of the 130 children (93 boys, 37 girls) was 11.5 (2.8) years. Overall ICCs ranged between 0.84 and 0.92. Reliabilities between physiatrists, physiotherapists and teachers (ICCs from 0.86 to 0.92) were higher than those between parents and the other raters (ICCs from 0.80 to 0.84) in 6-to-12 year age band. The overall correlation for criterion-related validity was -0.83.ConclusionThe Chinese version of the GMFCS-ER is a valid measure of functional ability in school children with CP and reliable enough for use by Chinese healthcare providers and parents. Effects of environmental and personal factors should be considered when practicing GMFCS-ER assessment. Implications for Rehabilitation Cerebral palsy. Research about GMFCS-ER is needed to promote a more extensive use of GMFCS-ER in China for school children with CP. The Chinese version of the GMFCS-ER is a valid measure of functional ability in school children with CP and reliable enough for use by Chinese healthcare providers. Effects of environmental and personal factors should be considered when performing the GMFCS-ER assessment.

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