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Table 1 General characteristics of study subjects N(%)

From: Working hours and depressive symptoms: the role of job stress factors

  Working hours
  Total 35–39 40 41–52 53–68 > 68
Total 23,197 (100.0) 644 (2.8) 10,497 (45.3) 7299 (31.5) 3653 (15.7) 1104 (4.8)
Gender
 Men 12,509 (53.9) 182 (1.5) 5524 (44.2) 3931 (31.4) 2105 (16.8) 767 (6.1)
 Women 10,688 (46.1) 462 (4.3) 4973 (46.5) 3368 (31.5) 1548 (14.5) 337 (3.2)
Age
 19–29 3025 (13.0) 109 (3.6) 1216 (40.2) 1029 (34.0) 569 (18.8) 102 (3.4)
 30–39 6357 (27.4) 111 (1.7) 3139 (49.4) 2034 (32.0) 887 (14.0) 186 (2.9)
 40–49 7062 (30.4) 160 (2.3) 3394 (48.1) 2219 (31.4) 1058 (15.0) 231 (3.3)
 50–59 4743 (20.4) 141 (3.0) 2095 (44.2) 1445 (30.5) 820 (17.3) 242 (5.1)
 60–69 1704 (7.3) 94 (5.5) 553 (32.5) 497 (29.2) 277 (16.3) 283 (16.6)
  ≥ 70 306 (1.3) 29 (9.5) 100 (32.7) 75 (24.5) 42 (13.7) 60 (19.6)
Education level
 Graduated high school or less 10,812 (46.6) 439 (4.1) 3701 (34.2) 3465 (32.0) 2349 (21.7) 858 (7.9)
 College 11,833 (51.0) 190 (1.6) 6428 (54.3) 3716 (31.4) 1263 (10.7) 236 (2.0)
 Higher than graduated college 552 (2.4) 15 (2.7) 368 (66.7) 118 (21.4) 41 (7.4) 10 (1.8)
Income (million KRW)
  < 1 1227 (5.3) 289 (23.6) 463 (37.7) 307 (25.0) 122 (9.9) 46 (3.7)
 1–1.99 8940 (38.5) 210 (2.3) 3467 (38.8) 2943 (32.9) 1671 (18.7) 649 (7.3)
 2–2.99 7091 (30.6) 82 (1.2) 3221 (45.4) 2363 (33.3) 1161 (16.4) 264 (3.7)
  ≥ 3 5939 (25.6) 63 (1.1) 3346 (56.3) 1686 (28.4) 699 (11.8) 145 (2.4)
Job category
 White collar 10,466 (45.1) 144 (1.4) 6438 (61.5) 3077 (29.4) 710 (6.8) 97 (0.9)
 Pink collar 5735 (24.7) 269 (4.7) 1668 (29.1) 1894 (33.0) 1506 (26.3) 398 (6.9)
 Blue collar 6996 (30.2) 231 (3.3) 2391 (34.2) 2328 (33.3) 1437 (20.5) 609 (8.7)
Employment status
 Full-time employee 18,860 (81.3) 305 (1.6) 9024 (47.8) 5984 (31.7) 2801 (14.9) 746 (4.0)
 Temporary employee 3229 (13.9) 233 (7.2) 1107 (34.3) 995 (30.8) 609 (18.9) 285 (8.8)
 Day employee 1108 (4.8) 106 (9.6) 366 (33.0) 320 (28.9) 243 (21.9) 73 (6.6)
Physical problem
 Yes 10,836 (46.7) 336 (3.1) 4314 (39.8) 3614 (33.4) 1961 (18.1) 611 (5.6)
 No 12,361 (53.3) 308 (2.5) 6183 (50.0) 3685 (29.8) 1692 (13.7) 493 (4.0)
Irregular working time
 Yes 3672 (15.8) 98 (15.2) 1150 (11.0) 1152 (15.8) 712 (19.5) 560 (50.7)
 No 19,525 (84.2) 546 (84.8) 9347 (89.0) 6147 (84.2) 2941 (80.5) 544 (49.3)
  1. Abbreviations: Korean Won, KRW