Objectives: To investigate the impacts of shift-work on general sleep quality, day-time sleepiness, and snoring problems of employees of a Taiwanese factory using sleep-related surveys. Materials and Methods: The cross-sectional cohort study was conducted using 1719 (of 14,725, 11.7%) randomly selected employees from a factory. The Pittsburg Sleep Quality Index (PSQI), Epworth Sleepiness Scale (ESS), and Snore Outcomes Survey (SOS) were administered. Descriptive data are shown as the number (%). Statistical analyses were conducted using unpaired t-test and Chi-squared test. Results: The survey return rate was 99.0% (N=1701) (including 1634 males, 96.1%). The mean age of interviewed employees was 45.7±7.5 years. Severe snoring occurred in 151 (SOS<55, 12.1%) and severe daytime sleepiness in 150 (ESS>12, 11.9%). Caffeine containing soft drinks were commonly used by shift-workers (p<0.05). Shift-workers performed more poorly in terms of general sleep quality and sleepiness, and had more snoring problems (p<0.05). Conclusions: The study shows that shift-work is a risk factor for sleep dysfunction, daytime sleepiness, and snoring problems. Factory owners should pay more attention to shift-work-related problems to enhance employee health.
Objectives: To investigate the impacts of shift-work on general sleep quality, day-time sleepiness, and snoring problems of employees of a Taiwanese factory using sleep-related surveys. Materials and Methods: The cross-sectional cohort study was conducted using 1719 (of 14,725, 11.7%) randomly selected employees from a factory. The Pittsburg Sleep Quality Index (PSQI), Epworth Sleepiness Scale (ESS), and Snore Outcomes Survey (SOS) were administered. Descriptive data are shown as the number (%). Statistical analyses were conducted using unpaired t-test and Chi-squared test. Results: The survey return rate was 99.0% (N=1701) (including 1634 males, 96.1%). The mean age of interviewed employees was 45.7±7.5 years. Severe snoring occurred in 151 (SOS<55, 12.1%) and severe daytime sleepiness in 150 (ESS>12, 11.9%). Caffeine containing soft drinks were commonly used by shift-workers (p<0.05). Shift-workers performed more poorly in terms of general sleep quality and sleepiness, and had more snoring problems (p<0.05). Conclusions: The study shows that shift-work is a risk factor for sleep dysfunction, daytime sleepiness, and snoring problems. Factory owners should pay more attention to shift-work-related problems to enhance employee health.