title: [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].
abstract: OBJECTIVE
  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.
  
  
  METHODS
  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.
  
  
  RESULTS
  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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Rehabilitation Center of Children' s Hospital of Fudan University, Shanghai 200032, China.
authors.forename: Su-juan
authors.initials: SJ
authors.lastname: Wang
authors.forename: Wei
authors.initials: W
authors.lastname: Shi
authors.forename: Yuan-gui
authors.initials: YG
authors.lastname: Liao
authors.forename: Xiu-juan
authors.initials: XJ
authors.lastname: Xu
authors.forename: Hong
authors.initials: H
authors.lastname: Yang
authors.forename: Xiao-mei
authors.initials: XM
authors.lastname: Shao
mesh_terms: D002547:Cerebral Palsy / Q000503:physiopathology*; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009048:Motor Skills / Q000145:classification*; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires