Self, Proxy and Interviewer Rated Versions of World Health Organization Disability Assessment Schedule (WHODAS) 2.0 among the Patients of Bipolar Affective Disorder

Abstract

Background: The World Health Organisation Disability Assessment Schedule (WHODAS 2.0) is an International Classification of Functioning based multidimensional instrument was developed for measuring disability among the patients with bipolar affective disorder. Objective: The present study aims to check the concordance amongst the self, proxy and interviewer administered version of the WHODAS 2.0 among the patients with bipolar affective disorder. Materials and Methods: The study was cross sectional in nature. Thirty samples of patients with bipolar affective disorder as per ICD-10 criteria were selected using a consecutive sampling technique. Patients above 18 years of age with total duration of illness of at least more than 2 years were included. Those who refused consent for the study were excluded. The study was conducted at Outpatient department (OPD) of Mental Health Institute (MHI) and Department of Psychiatry, Government Medical College and Hospital Sector 32, Chandigarh and used self, proxy and interviewer administered version of WHODAS 2.0. The data was analyzed using SPSS-23.0 software. Results: The study indicated that there was no significant difference found among the self, proxy and interviewer-based assessment for most of the items however the mean score of interviewer rated version was higher in comparison to self and proxy rated versions of WHODAS 2.0. Conclusion: The overall inter-reliability of WHODAS 2.0 among the self, proxy and interviewer was moderate. There was no significant difference among the self, proxy and interviewer assessment for most items. This study highlights the fact that service users can also carry out an objective self assessment of disability thus upholding the principles of advanced directives as envisaged under Mental Health Care Act, 2017.

Keywords: WHODAS 2.0, Bipolar Affective Disorder, Self, Proxy, & Interviewer