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. 2022 Sep 30;5(4):471–479. doi: 10.31662/jmaj.2021-0193

Table 1.

Characteristics of Study Participants (n = 1,343).

Characteristic variables n (%)
Age (years)
 25-29 202 (15.0)
 30-39 1,141 (85.0)
Total working hours per week at the main medical institution where one works
 <50 135 (10.1)
 50-59 285 (21.2)
 60-69 351 (26.1)
 70-79 241 (17.9)
 80-99 188 (14.0)
 ≥100 143 (10.6)
Number of times on night duty in the previous
month at the main medical institution where one works
 None 94 (7.0)
 1-4 times 1,047 (78.0)
 5 times or more 202 (15.0)
Number of times on call in the previous month at the main medical institution where one works
 None 279 (20.8)
 1-4 times 502 (37.4)
 5-9 times 363 (27.0)
 ≥10 199 (14.8)
Number of unreasonable patients demands and complaints in the previous 6 months
 None 709 (52.8)
 More than once 634 (47.2)
Current smoking status
 Smoke 173 (12.9)
 Do not smoke 1,170 (87.1)
Number of sweating-inducing exercise sessions of ≥30 min per week in the previous month
 None 690 (51.3)
 1-2 times 546 (40.7)
 3-4 times 87 (6.5)
 Almost every day 20 (1.5)
Average hours of sleep per day other than the night duty in the previous month
 <6 505 (37.6)
 ≥6 838 (62.4)
The score on the Quick Inventory of Depressive Symptomatology (QIDS)
 0-5 1,014 (75.5)
 6-10 239 (17.8)
 11-15 77 (5.7)
 16-20 10 (0.7)
 21-27 3 (0.3)