Psychometric evaluation of the Swedish self-rated 36-item version of WHODAS 2.0 for use in psychiatric populations – using classical test theory
Robin Midhage, Liselotte Hermansson, Per Söderberg, Stefan Tungström, Axel Nordenskjöld, Cecilia Svanborg, Ylva Ginsberg, Mia Ramklint
Abstract
AIM: The aim of this study was to evaluate the reliability and validity of the Swedish version of the self-rated 36-item WHODAS 2.0 in patients from Swedish psychiatric outpatient settings, using classical test theory. METHODS: The 36-item WHODAS 2.0, together with the Sheehan Disability Scale (SDS), was filled in by a sample of 780 participating psychiatric patients: 512 (65.6%) women, 263 (33.7%) men, and 5 (0.6%) who did not report any sex. RESULTS: = 395). The WHODAS 2.0 differed significantly between diagnostic groups. CONCLUSION: The present study demonstrates that the Swedish self-rated 36-item version of WHODAS 2.0, within a psychiatric outpatient population, showed good reliability and convergent validity. We conclude that the self-rated 36-item Swedish version of WHODAS 2.0 can be used for valid interpretations of disability in patients with psychiatric health conditions.