Development and validation of the World Health Organization disability Assessment Schedule 2.0 (WHODAS 2.0) Indonesian version in stroke survivors

Purpose Stroke is the third most common cause of disability worldwide. In order to effectively study the disability status experienced by stroke survivors, it is important to identify reliable and valid tools to measure disability that can be administered to this population. No previous study had been conducted on the Indonesian version of the WHO Disability Assessment Schedule 2.0 (WHODAS 2.0). The aim of this study was to develop and validate the Indonesian version of the WHODAS 2.0 for stroke survivors in Indonesia. Methods Following translation and back-translation, the Indonesian version of the WHODAS 2.0 was administered to 183 stroke survivors. We used all six domains of the WHODAS 2.0, with the exception of four items of "work or school activities" in domain 5. Internal consistency was measured by Cronbach's alpha, the inter-rater reliability was measured by interclass correlations (ICCs), and the construct validity was tested with an exploratory factor analysis (EFA) and confirmatory factor analysis (CFA). Results The range of Cronbach's alpha was 0.86-0.92, which indicated excellent reliability, and ICC was very good at 0.87-0.99. The EFA and CFA for the main 32-item questionnaire exhibited a total variance of 95% (KMO) and a p value of 0.4, and all the model fit indices were acceptable. Conclusions The WHODAS 2.0 was adapted for use in Indonesia and showed good results for all six domains. Therefore, the Indonesian version of the WHODAS 2.0 can be applied to assess disability in Indonesian stroke survivors.