Combined effects of shift work and life-style on the prevalence of insomnia, sleep deprivation and daytime sleepiness

The prevalence of daytime sleepiness among workers ranged from 20-37% depending on the shift system.

• Insomnia, sleep deprivation, and daytime sleepiness were significantly influenced by the type of shift work.
• Workers on 2- and 3-shift systems, as well as those with irregular shifts, reported higher sleep complaints compared to those on day shifts.
• Leisure-time physical activity and alcohol consumption were key predictors of sleep complaints, excluding snoring.
• The impact of physical activity and alcohol consumption varied with different shift schedules.
• Both 2-shift and permanent night work were associated with an increase in sleep complaints.

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