Turkish Journal of Tobacco Control, cilt.5, sa.1, ss.10-22, 2025 (Hakemli Dergi)
Background: Tobacco consumption continues to be a primary contributor to preventable illness and death globally, especially among young adults. Medical students experience high stress levels and inadequate sleep, potentially increasing tobacco consumption, depression, and anxiety.
Methods: This cross-sectional study recruited 273 medical students from a A medical school in Türkiye. Data were collected via a sociodemographic questionnaire, the Pittsburgh Sleep Quality Index (PSQI), the Beck Depression Inventory (BDI), the Beck Anxiety Inventory (BAI), and the Fagerström Test for Nicotine Dependence (FTND). Mann-Whitney U and chi-square tests were employed to compare smokers (n=70) and nonsmokers (n=203). Linear regression analyses examined the impact of smoking status on PSQI, BDI, and BAI scores, whereas logistic regression identified predictors of smoking.
Results: Overall, 53.1% of the students had tried smoking at least once in their lifetime, and 25.6% reported current tobacco use. Smokers exhibited significantly higher median PSQI (9 vs. 6), BDI (17 vs. 10), and BAI (15 vs. 11) scores (p<0.05). Chi-square analyses indicated that poor sleep quality and moderate-to-severe depression were more prevalent among smokers. Linear regression revealed that smoking predicted an average increase of 2.36 points in PSQI, 6.01 in BDI, and 3.97 in BAI (p<0.01). FTND scores showed a positive correlation with PSQI and BAI, but not with BDI. Logistic regression demonstrated that each 1-point increase in PSQI elevated the odds of current smoking by 26.6% (OR=1.266).
Conclusions: Current smoking was associated with reduced sleep quality, elevated depression, and increased anxiety symptoms in medical students. These results highlight the need for integrated interventions focusing on smoking cessation and mental health support to improve the well-being of future physicians.