Reliability and validity of the Bangla version of WHOQOL-BREF in an adult population in Dhaka, Bangladesh.

The aim of the present study was to evaluate the validity and reliability of the Bangla version of the World Health Organization Quality of Life questionnaire (WHOQOL-BREF) in an adult population in Bangladesh. Approximately 200 adults in the Dhaka district were interviewed using a questionnaire containing the Bangla version of the WHOQOL-BREF, as well as questions related to sociodemographic data. To assess the reliability of WHOQOL-BREF, Cronbach's alpha was calculated, and test-retest reliability was evaluated using intraclass correlation coefficient (ICC) of the first and second administrations. For comparison, approximately 200 leprosy patients were also interviewed with the questionnaire to examine the discriminant validity between groups. On the whole, sufficient validity was observed, and the Bangla version of the WHOQOL-BREF was deemed to be valid and reliable in assessing the quality of life of an adult population in Bangladesh.

Validity and reliability of the Bangla version of WHOQOL-BREF on an adolescent population in Bangladesh.

The objectives of this study were to develop a Bangla version of the World Health Organization Quality of Life questionnaire (WHOQOL-BREF), and assess its reliability and validity on an adolescent population in Bangladesh. In total, 187 boys (mean age 14.6 years +/- SD 2.1) and 137 girls (15.2 +/- SD 2.0) from residential areas, and 157 boys (13.8 +/- SD 2.1) and 121 girls (13.4 +/- SD 2.1) from slums in Dhaka were interviewed using a questionnaire, which included a Bangla translation of the WHOQOL-BREF. Thirty-eight randomly selected adolescents from the original interviewed group were re-administered the same questionnaire 1 week later. On the whole, the Bangla version of WHOQOL-BREF showed good internal consistency and test-retest reliability. In comparisons between residential and slum areas, discriminant validities were observed in the total and environmental domain of both genders and in the social relationship domain of males. Furthermore, discriminant validities of physical and psychological domains were observed in gender comparisons. These results suggest that the Bangla version of WHOQOL-BREF is valid and reliable in assessing the quality of life of adolescents in Bangladesh.