OBJECTIVE: War is a significant factor affecting human health, including sleep and quality of life, however, the characteristics of these differences among university students remain insufficiently studied. This study aimed to comprehensively assess sleep quality, chronotype, and quality of life indicators among students under wartime conditions, to analyze their inter-relationships, and to identify clusters based on their combined patterns.
METHODS: A cross-sectional study included 130 students aged 18-25 years. The Pittsburgh Sleep Quality Index (PSQI), the Morningness-Eveningness Questionnaire (MEQ), and the Short Form-36 Health Survey (SF-36) were used to assess sleep quality, chronotype, and quality of life.
RESULTS: Poor sleep quality was identified in 67.7% of participants (PSQI: 5.92 ± 2.96). Students with poor sleep quality were more likely to live separately from family members (p < .05) and to consume alcohol (p < .05). According to chronotype, participants were classified as intermediate (74.6%), morning (9.2%), or evening (16.1%). The evening chronotype was associated with lower vitality scores (p < .05) and more frequent alcohol consumption (p < .05). Poor sleep quality was associated with lower scores in the physical and mental health components; the mental component of quality of life emerged as an independent predictor of poor sleep quality (OR = 0.41; 95% CI: 0.20-0.86). Cluster analysis identified four distinct profiles of sleep quality, chronotype, and quality of life, ranging from optimal to less favorable.
CONCLUSIONS: The findings indicate that, under wartime conditions, the interaction between sleep quality, chronotype, and quality of life among students forms four distinct profiles, reflecting the multidimensional nature of the impact of the war context on sleep and related aspects of students' quality of life.
