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Reliability and Validity of the GMFM-66 in 0- to 3-Year-Old Children with Cerebral Palsy

2006; Lippincott Williams & Wilkins; Volume: 85; Issue: 2 Linguagem: Inglês

10.1097/01.phm.0000197585.68302.25

1537-7385

Shi Wei, Sujuan Wang, Liao Yuan-gui, Hong Yang, Xu Xiu-Juan, Shao Xiao-mei,

Family and Disability Support Research

To examine the reliability and validity of a 66-item version of the Gross Motor Function Measure (GMFM-66) to assess the gross motor functions of children <3 yrs old with cerebral palsy.298 valid samples were obtained from 171 children with cerebral palsy (male 126, female 45, mean age 19 mos, age range 3-36 mos) measured with GMFM-88. Then a 73-item version of GMFM (GMFM-73) special for these children was obtained by Rasch analysis. GMFM-66 score and GMFM-73 scores of each sample were obtained. The reliability and validity of GMFM-66 were evaluated by analyzing the correlation between the scores and between the change scores of these two GMFM versions. The relative precision of GMFM-73 vs. GMFM-66 was also analyzed.The test-retest reliability and interscorer reliability of GMFM-66 were both high. The ICC scores were 0.9666 and 0.9782, respectively. Significant correlations were found between the scores (r = 0.9848, P < 0.001) and between the change scores (r = 0.8700, P < 0.001) of these two versions of GMFM. A 14% less gain in relative precision was achieved when using GMFM-73 vs. GMFM-66.Results indicated that the GMFM-66 had good reliability and validity in assessing the gross motor functions of children <3 yrs old with cerebral palsy. The GMFM-73 derived in the present study did not function significantly better for young children than GMFM-66.