Abstract: Objective To work out the Cerebral Palsy-Gross Motor Function Questionnaire(CP-GMFQ) and evaluate the reliability,validity and responsiveness of CP-GMFQ.Methods 160 children with cerebral palsy(CP)(97 males and 63 females;average age: 47.7±20.1 months,range: 18～90 months) were involved.The first 27 children received second assessment to assess test-retest reliability with a interval of 7 to 18 days.Criterion-related validity was evaluated by comparing CP-GMFQ scores with Gross Motor Function Classification System(GMFCS) levels and scores of Gross Motor Function Measure(GMFM).21 children were randomly selected for responsiveness analysis by effect size.After a interval of 3 to 7 months the re-assessment GMFQ and GMFM were tested.30 children were randomly selected for comparative testing time of GMFQ and GMFM.Results GMFQ had excellent test-retest reliability(ICC=0.9940);criterion-related validity was excellent between GMFQ scores and GMFCS levels and GMFM scores(r=0.77～0.92).Effect size of GMFQ(0.34) between GMFM88 and GMFM66,testing time of GMFQ(average 4.7±1.6 min) were significantly less than testing time of GMFM(average 17.7±4.6 min)(P<0.001).Conclusion The reliability,validity and responsiveness of GMFQ are satisfying.The gross motor functions of children with cerebral palsy could be easy and reasonably measured by GMFQ.

Key words: cerebral palsy, gross motor, function, questionnaire