Reliability and validity of the Children Participation Assessment Scale in Activities Outside of School-Parent version for children with physical disabilities

INTRODUCTION: Occupational therapy supports individuals to participate in meaningful activities. Participation in activities should be assessed with appropriate tools. The aim of the present study was to establish the reliability and validity of the Children Participation Assessment Scale in Activities Outside of School-Parent version (CPAS-P) for children with physical disabilities. METHODS: The participants were 304 parents of 6- to 12-year-old children with physical disabilities. Confirmatory factor analysis (CFA), internal consistency, convergent validity of the CPAS-P with the Vineland Adaptive Behavior Scale (VABS), and test-retest reliability were measured. RESULTS: Confirmatory factor analysis showed acceptable values for all indices of fit, namely goodness of fit index (GFI), adjusted GFI, normal fix index, comparative fit index, incremental fit index (i.e., greater than 0.90), and the value of root mean square error of approximation was 0.07, which was acceptable. High Cronbach's alpha coefficients (above 0.9) were reported for the total score of each scale (diversity = 0.94, frequency = 0.94, with whom = 0.92, enjoyment = 0.95, and parent satisfaction = 0.95). The convergent validity of the CPAS-P with the VABS was moderate to good and the test-retest reliability (ICC) for the total scores ranged from 0.90 to 0.96. CONCLUSION: The CPAS-P had good psychometric properties for parents reporting the activities of their 6- to 12-year-old children with physical disabilities and can be utilized in clinical practice.