Validity of the Assistance to Participate Scale with Parents of typically developing Australian children aged three to eight years

Background/aim The Assistance to Participate Scale (APS) measures the assistance parents provide to children with disability to participate in play and leisure. The primary aim of this study was to extend the psychometric development of the APS through application to a typically developing sample. Methods Parents (N = 125) of typically developing Australian children aged three to eight years completed an online questionnaire comprising the APS, Pediatric Evaluation of Disability Inventory (PEDI), Pediatric Quality of Life Scale (PedsQL) (caregiver scales) and demographic questions. Guided by the COnsensus‐based Standards for the selection of health Measurement INstruments (COSMIN), structural validity of the APS was investigated using principal components analysis; internal consistency reliability through calculation of Cronbach's α; construct validity through convergence with previously validated measures of paediatric occupational performance and quality of life (PEDI, PedsQL) and investigation of five research hypotheses developed a priori. Results Structural validity of the APS was confirmed. Internal consistency (Cronbach's α = 0.76) was good for this unidimensional scale. Construct validity was substantiated by moderate correlations with the PEDI and PedsQL (physical), and data that supported all research hypotheses. Statistically significant differences were found in APS scores based on sex (P = 0.018), age (P