سرمایه ی اجتماعی و ارتباط آن با کیفیت زندگی و شادمانی در جمعیت ۱۸-۶۵ ساله ایرانی : یک پیمایش ملی.

Background and Objectives: Social capital is one the most important social determinants of health. In this study we aimed to measure the social capital and investigate its relationship with quality of life and happiness in 18-65 years Iranians. Materials and Methods: This cross-sectional study was conducted on 2375 18-65 years Iranians. The Tuesca social capital questionnaire was used for data collection after assessing the psychometric properties of the tool. The final version of the tool included eight items with a score range from 0 to 16. The quality of life and happiness of each was measured using one question. Data analysis was conducted using T-test, Pearson correlation coefficient, one-way analysis of variance and multiple linear regression. Results: The mean score of the social capital was 7.75. Among the domains of social capital, the lowest mean score was related to the "social networks" dimension 2.91(1.06). The highest mean score was related to the dimension of altruism3.78(1.42). The social capital and its "social networks", "trust" and "altruism" domains, significantly determine quality of life (R2 = 0.47, p = 0.001) and happiness (R2 = 0.44, p = 0.001). The predictive role of altruism component was higher than other components. Conclusion: The study results show the important role of social capital and its domains of "social networks, trust and altruism" in the quality of life and happiness of the Iranian society. [ABSTRACT FROM AUTHOR]