Excessive Daytime Sleepiness and Its Associated Factors among Emergency Medicine Residents in South Korea: A Nationwide Survey

Table 1

Baseline demographic characteristics and work environment of the EM residents.

Variables	N = 241
Age, years	30.8 ± 3.3
Sex
Male	169 (70.1%)
Female	72 (29.9%)
Marital status
Unmarried	159 (66.0%)
Married	82 (34.0%)
Smoking habit
Yes	46 (19.1%)
No	195 (80.9%)
Alcohol consumption
Yes	146 (60.6%)
No	95 (39.4%)
Regular exercise
Yes	86 (35.7%)
No	155 (64.3%)
ESS	9.1 ± 5.1
WHW	65.9 ± 12.0
NWM	10.1 ± 3.5
Level of emergency medical center
Regional emergency center	120 (49.8%)
Local emergency center	121 (50.2%)
Satisfaction of work schedule
Unsatisfied	69 (28.6%)
Fair	91 (37.8%)
Satisfied	81 (33.6%)
Available of recess
No	147 (61.0%)
Irregular	38 (15.8%)
Yes	56 (23.2%)
Depression
Yes	70 (29.0%)
No	171 (71.0%)

Variables are presented as mean ± standard deviation or number (%). EM, emergency medicine; ESS, Epworth sleepiness scale; WHW, working hours per week; NWM, night working days per month.