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

Table 2.

Associations between Depressive State (Quick Inventory of Depressive Symptomatology score ≥11) and Other Variables among Male Orthopedic Physicians <40 Years Old in Japan (n = 1,343).

Variables In depressive state
(QIDS Score ≥11)
Not in depressive state
(QIDS Score <11)
n = 90 (%) n = 1,253 (%)
Total working hours per week at the main medical
institution where one works
 <50 3 (3.3) 132 (10.5)
 50-59 9 (10.0) 276 (22.0)
 60-69 17 (18.9) 334 (26.7)
 70-79 15 (16.7) 226 (18.0)
 80-99 20 (22.2) 168 (13.4)
 ≥100 26 (28.9) 117 (9.3)
Number of times on night duty in the previous month
at the main medical institution where one works
 None 5 (5.6) 89 (7.1)
 1-4 times 63 (70.0) 984 (78.5)
 ≥5 times 22 (24.4) 180 (14.4)
Number of times on call in the previous month at
the main medical institution where one works
 None 14 (15.6) 265 (21.1)
 1-4 times 32 (35.6) 470 (37.5)
 5-9 times 21 (23.3) 342 (27.3)
 ≥10 times 23 (25.6) 176 (14.0)
Number of unreasonable patients demands
and complaints in the previous 6 months
 None 37 (41.1) 672 (53.6)
 More than once 53 (58.9) 581 (46.4)
Current smoking status
 Smoke 26 (28.9) 147 (11.7)
 Do not smoke 64 (71.1) 1106 (88.3)
Number of sweating-inducing exercise sessions
of ≥30 min per week in the previous month
 None 66 (73.3) 624 (49.8)
 1-2 times 21 (23.3) 525 (41.9)
 3-4 times 2 (2.2) 85 (6.8)
 Almost every day 1 (1.1) 19 (1.5)
Average hours of sleep per day other than
the night duty in the previous month
 <6 53 (58.9) 452 (36.1)
 ≥6 37 (41.1) 801 (63.9)

QIDS Quick Inventory of Depressive Symptomatology