Validation of Persian version of WHOQOL-HIV BREF questionnaire in Islamic Republic of Iran

Abstract

The aim of this cross-sectional study was to validate the first Persian version of the WHOQOL-HIV BREF questionnaire. The study sample comprised 61 patients regularly attending the outpatient infectious disease clinic consultation centre for patients with behavioural disorders in 2013–2014. The internal consistency, content related validity and reliability of WHOQOL-HIV BREF were evaluated. Content validity was quantified using the content validity ratio (CVR) according the to Lawshe formula. CVR > 0.51 and mean judgment > 2 were significant at P = 0.05. The Cronbach alpha score was > 0.7 for each domain and = 0.87 for the whole scale, indicating good reliability. Item-to-total correlation coefficient between each item and its respective domain was 0.39–0.87. The correlation between each domain and overall QOL was excellent. This study demonstrates that the Persian version of WHOQOL-HIV BREF is a valid and reliable tool for evaluation of QOL in HIV-infected patients.