Quality of life and sleep disorders in Tehran Employees Cohort (TEC); Association with secondhand smoking and wealth index

Omid Nasri; HamidReza Pouragha; Vali Baigi; Naseh Shalyari; Masud Yunesian

doi:10.1007/s40201-021-00702-0

Quality of life and sleep disorders in Tehran Employees Cohort (TEC); Association with secondhand smoking and wealth index

J Environ Health Sci Eng. 2021 Jul 12;19(2):1473-1481. doi: 10.1007/s40201-021-00702-0. eCollection 2021 Dec.

Authors

Omid Nasri¹, HamidReza Pouragha², Vali Baigi³, Naseh Shalyari¹, Masud Yunesian^{1

4}

Affiliations

¹ Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
² Tehran University of Medical Sciences, Tehran, Iran.
³ Sina Trauma and Surgery Research Centre, Tehran University of Medical Sciences, Tehran, Iran.
⁴ Department of Research Methodology and Data Analysis, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran.

Abstract

Purpose: Second-hand smoke is recognized as a major indoor pollutant. Evidences indicated that Second-hand smoke exposure can influence on not only physical health, but also mental well-being. As the correlation of secondhand smoke exposure with sleep quality and quality of life has not yet been clarified sufficiently, the purpose of this study was to evaluate the association between Second-hand smoke exposure, with sleep quality and quality of life after adjusting for active smoking and other relevant confounders.

Methods: The participants of this study were 1790 staff in Tehran University of Medical Sciences with different jobs employed in various academic departments (clinical, research, services, educational and technical ones). They participated voluntarily in this research project and completed the informed consent form between 2018 and 2019. A translated questionnaire of Global Adult Tobacco Survey was used to gather information about smoke exposure. When to evaluate the quality of life, the WHOQOL-BREF tool was applied. All statistical analyses were executed using STATA V14 software.

Results: High rate of smoking and also exposure to second-hand smoke significantly increased sleep disorder and reduced the quality of life. In other words, smokers or those who are exposed to second-hand smoke suffer from sleep disturbances and had a poorer physical, psychological, and environmental quality of life. Additionally, the results of multivariate regression analysis demonstrated that the secondhand-smoke group had 1.38 times higher rate of sleep disorder in comparison with non-smokers, that was statistically significant. The women had 2.68 times higher odds of having sleep disorder compared to men. (95 % CI: 2.20 to 3.27). On the other hand, mean score of psychological domain of quality of life in secondhand-smoke group was lower with the size of difference as 0.66 than that in non-smokers, and the difference was statistically significant (p = 0.001).

Conclusions: Both active smoking and exposure to second hand smoke have a negative impact on sleep quality and quality of life.

Keywords: Quality of life; Second-hand smoke; Sleep quality.