An investigation of the psychometric properties of the Turkish adaptation of the activity limitations in cerebral palsy questionnaire

Purpose To translate the ACTIVLIM-CP questionnaire, developed to assess global activity performance in children with Cerebral Palsy (CP), into Turkish and to investigate its psychometric properties. Methods Eighty-nine children with CP, aged between 2 and 18 years (mean age: 10.08 +/- 4.94 years), were included in the study. Internal consistency was measured by Cronbach's alpha and test-retest reliability was assessed using intraclass correlation coefficient (ICC). Convergent validity was evaluated through the pattern of correlations between the ACTIVLIM-CP with PEDI, ABILOCO-Kids, ABILHAND-Kids, and Wee-FIM scores. Known-group comparisons were made according to epilepsy existence and ambulation level measured by Gross Motor Function Classification System (GMFCS). Results Internal consistency was excellent (Cronbach's alpha = 0.990), and the ICC for the test-retest reliability was 0.990. There was a very strong correlation between ACTIVLIM-CP and ABILHAND-Kids (r = 0.946), WeeFIM (r = 0.900), PEDI Functional Skills and Caregiver Assistance scores (r = 0.954, r = 0.937, respectively), and ABILOCO-Kids (r = 0.817) (p < 0.001) score. ACTIVLIM-CP score was lower in children with epilepsy (p = 0.001) and in the high-level group according to GMFCS (p < 0.001). Conclusion The Turkish adaptation of ACTIVLIM-CP is a valid and reliable scale for measuring activity limitations in children with CP and is compatible with other scales evaluating activity limitations.