Factors associated with quality of life among joint and nuclear families using the World Health Organization's quality of life instrument (WHOQOL-BREF).
Abstract Background Family system has been found to affect the quality of life (QOL) among joint and nuclear family systems. In Pakistan, there is scarcity of literature about QOL among joint and nuclear family systems. We determined the factors associated with QOL scores in joint and nuclear family systems in Pakistani general population in District Abbottabad, Pakistan. Methods We conducted a population based cross sectional study in all 52 Union Councils (UCs) of District Abbottabad, Khyber Pakhtunkhwa province, Pakistan from March 2015 to August 2015. Multistage cluster sampling technique was used to select 2063 participants from both nuclear and joint family houses. A validated Urdu version of WHO QOL-BREF was used to assess level of quality of life among participants. Univariate and multivariate analysis was done to find out the association of different socio demographic variables with QOL among both family systems. A multilevel linear regression using backward analysis allowing to obtain final model for each domain was done to find out the variables that affect QOL score among both family systems. Results A total of 2063 participants were included in this study (51.0% joint family, 49.0% nuclear family) with the response rate of 97.4%. In multiple linear regression analysis of each domain for joint and nuclear family systems, rural as compare to urban residence (p < 0.001), being female as compare to males (p < 0.001), increasing age as unit a decade (p < 0.001), having any disease as compare to absence of disease (p < 0.001) low socioeconomic status (SES) as compare to high SES (p < 0.001) were found out to be strong predictor of poorer QOL. Furthermore social capital (p < 0.001) had a positive effect on joint and nuclear family QOL scores. Conclusion Our study was the first of its kind which determined the factors of QOL scores in joint and nuclear families using validated WHO QOL-BREF in Pakistan. Male gender, urban residence, younger age, higher socio-economic status and social capital were positive predictors of QOL score while increasing age and presence of illness were associated with lower QOL scores among both family systems.