Table 1. Basic characteristics of study population.
| Mean (SD) or n (%) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Depressive symptoms | Suicidal ideation | ||||||||
| Total | Yes | No | Yes | No | |||||
| Male | |||||||||
| Age | 50.2±12.6 | 52.3±12.6 | 50±12.6 | p<0.01; t=4.61 | 53.8±13.2 | 49.8±12.5 | p<0.01; t=−7.81 | ||
| Body mass index | 24.2±3 | 24±3.1 | 24.2±3 | P=0.15; t=−1.40 | 23.8±3.1 | 24.2±3 | P=0.15; t=4.02 | ||
| House hold income level | |||||||||
| 1st quartile | 974 (12.2) | 127 (13.0) | 847 (87.0) | p<0.01; x2=38.33 | 154 (15.8) | 820 (84.2) | p<0.01; x2=97.03 | ||
| 2nd quartile | 1,989 (24.9) | 185 (9.3) | 1,803 (90.7) | 234 (11.8) | 1,755 (88.2) | ||||
| 3rd quartile | 2,458 (30.8) | 186 (7.6) | 2,272 (92.4) | 176 (7.2) | 2,282 (92.8) | ||||
| 4th quartile | 2,564 (32.1) | 178 (6.9) | 2,386 (93.1) | 173 (6.7) | 2,391 (93.3) | ||||
| One’s own weekly working hours | |||||||||
| Economically inactive | 538 (6.7) | 75 (14.0) | 462 (86.0) | p<0.01; x2=30.20 | 95 (17.7) | 443 (82.3) | p<0.01; x2=83.05 | ||
| <40 hours | 1,426 (17.7) | 116 (8.1) | 1,310 (91.9) | 149 (10.4) | 1,277 (89.6) | ||||
| 40–50 hours | 2,672 (33.2) | 199 (7.4) | 2,473 (92.6) | 174 (6.5) | 2,498 (93.5) | ||||
| 50–60 hours | 1,456 (18.1) | 108 (7.4) | 1,348 (92.6) | 111 (7.6) | 1,345 (92.4) | ||||
| ≥60 hours | 1,964 (24.4) | 190 (9.7) | 1,774 (90.3) | 215 (10.9) | 1,749 (89.1) | ||||
| Spouse’s weekly working hours | |||||||||
| Economically inactive | 3,485 (43.3) | 260 (7.5) | 3,225 (92.5) | p<0.01; x2=16.40 | 246 (7.1) | 3,239 (92.9) | p<0.01; x2=41.51 | ||
| <40 hours | 1,747 (21.7) | 162 (9.3) | 1,585 (90.7) | 186 (10.6) | 1,561 (89.4) | ||||
| 40–50 hours | 1,378 (17.1) | 126 (9.1) | 1,252 (90.9) | 135 (9.8) | 1,243 (90.2) | ||||
| 50–60 hours | 553 (6.9) | 40 (7.2) | 513 (92.8) | 61 (11.0) | 492 (89.0) | ||||
| ≥60 hours | 893 (11.1) | 100 (11.2) | 792 (88.8) | 116 (13.0) | 777 (87.0) | ||||
| Female | |||||||||
| Age | 47±12.1 | 49.1±12.2 | 46.7±12 | p<0.01; t=6.55 | 49.3±13.2 | 46.6±11.8 | P<0.01; t=−6.87 | ||
| Body mass index | 23.5±3.4 | 23.7±3.6 | 23.5±3.4 | P=0.05; t=1.95 | 23.8±3.7 | 23.5±3.3 | p<0.01; t=−2.84 | ||
| House hold income level | |||||||||
| 1st quartile | 974 (12.2) | 215 (22.1) | 759 (77.9) | p<0.01; x2=41.31 | 247 (25.4) | 727 (74.6) | p<0.01; x2=105.3 | ||
| 2nd quartile | 1,989 (24.9) | 317 (15.9) | 1,672 (84.1) | 376 (18.9) | 1,613 (81.1) | ||||
| 3rd quartile | 2,458 (30.8) | 354 (14.4) | 2,103 (85.6) | 391 (15.9) | 2,067 (84.1) | ||||
| 4th quartile | 2,564 (32.1) | 350 (13.7) | 2,212 (86.3) | 303 (11.8) | 2,261 (88.2) | ||||
| One’s own weekly working hours | |||||||||
| Economically inactive | 3,483 (43.2) | 542 (15.6) | 2,940 (84.4) | p<0.01; x2=21.77 | 590 (16.9) | 2,893 (83.1) | p<0.01; x2=30.65 | ||
| <40 hours | 1,746 (21.7) | 261 (15) | 1,483 (85) | 285 (16.3) | 1,461 (83.7) | ||||
| 40–50 hours | 1,380 (17.1) | 176 (12.8) | 1,204 (87.2) | 168 (12.2) | 1,212 (87.8) | ||||
| 50–60 hours | 556 (6.9) | 92 (16.5) | 464 (83.5) | 107 (19.2) | 449 (80.8) | ||||
| ≥60 hours | 891 (11.1) | 177 (19.9) | 714 (80.1) | 179 (20.1) | 712 (79.9) | ||||
| Spouse’s weekly working hours | |||||||||
| Economically inactive | 540 (6.7) | 97 (18) | 443 (82) | p<0.01; x2=20.49 | 110 (20.4) | 430 (79.6) | p<0.01; x2=22.28 | ||
| <40 hours | 1,429 (17.7) | 243 (17) | 1,186 (83) | 258 (18.1) | 1,171 (81.9) | ||||
| 40–50 hours | 2,669 (33.1) | 357 (13.4) | 2,310 (86.6) | 373 (14) | 2,296 (86) | ||||
| 50–60 hours | 1,454 (18.1) | 210 (14.5) | 1,243 (85.5) | 244 (16.8) | 1,210 (83.2) | ||||
| ≥60 hours | 1,964 (24.4) | 341 (17.4) | 1,623 (82.6) | 344 (17.5) | 1,620 (82.5) | ||||