Study on the reliability and validity of the 66-item version on the gross motor function measure in 0-3 year olds with cerebral palsy
Wang, S.-j.; Shi, W.; Liao, Y.-g.; Xu, X.-j.; Yang, H.; Shao, X.-m.
Zhonghua Liu Xing Bing Xue Za Zhi 27(6): 530-534
2006
ISSN/ISBN: 0254-6450 PMID: 17152517 Document Number: 600613
To examine the reliability and validity of the 66-item version on the gross motor function measure (GMFM-66) to assess the gross motor functions of children below 3 years oldwith cerebral palsy. 298 valid samples were obtained from 171 children with cerebral palsy (male 126, female 45 with mean age 19 months, age range 3-36 months) measured with GMFM-88. Then a 73-item version of GMFM (GMFM-73) special for these children was obtained by Rasch analysis. Both GMFM-66 and GMFM-73 scores of to each sample were obtained. The reliability and validity of GMFM-66 were evaluated through analyzing the correlation between the scores and between the changed scores of these two GMFM versions. The relative precision of GMFM-73 versus GMFM-66 was also analyzed. Significant correlations were found between the scores and between the changed scores of these two versions of GMFM. A 14% less gain in relative precision was achieved when using GMFM-73 versus GMFM-66. Results indicated that the GMFM-66 had good reliability and validity in assessing the gross motor functions of children below 3 years old with cerebral palsy.