The Relationship between Quality of Life and Personality Traits in Drug Addicts

Aim and The present study examined the predictability of quality of life (QOL) based on personality traits and demographic characteristics of drug addicts. Methods and Materials: In the current descriptive, cross-sectional study, 200 individuals were randomly selected from addicts who referred to drug addiction treatment centers in Tehran (Iran). The World Health Organization Quality of Life Scale-Brief Version (WHOQOL-BREF) and the short version of Cloninger's Temperament and Character Inventory (TCI) were completed by the participants. The collected data was analyzed using Pearson's correlation coefficient and stepwise regression analysis. Personality traits of self-directedness, persistence, and employment status explained 33% of variance of the total QOL score. Self-directedness and persistence explained 16% of the variance of physical subscale of QOL. Self-directedness, reward dependence, and employment status explained 34% of the variance of psychological subscale of QOL. Self-directedness and employment status explained 20% and 26% of the variance of social and environmental subscales of QOL, respectively. The mentioned factors could significantly predict QOL. Improving self-directedness and reward dependence along with decreasing persistence and unemployment would reduce QOL in drug addicts.