Table 1 Baseline characteristics of the participants overall, and stratified by depression status, n = 10,341
| Â | Overall | Depressed | Non-depressed | P valuea |
|---|---|---|---|---|
N = 10,341 | n = 1488 | n = 8832 |  | |
n (%) | n (%) | n (%) | Â | |
Age group (in years) | ||||
20–30 | 2595 (25.1) | 432 (29.0) | 2160 (24.5) | < 0.001 |
31–40 | 2476 (23.9) | 364 (24.5) | 2102 (23.8) |  |
41–52 | 2733 (26.4) | 421 (28.3) | 2308 (26.1) |  |
  > 52 | 2534 (24.5) | 271 (18.2) | 2259 (25.6) |  |
Male gender | 4620 (44.0) | 463 (31.1) | 4146 (46.9) | < 0.001 |
Socio-economic positionb | ||||
 High and intermediate level salary | 4702 (45.5) | 493 (37) | 4206 (50.2) |  |
 Assistant –non manual workers | 1438 (13.9) | 222 (16.7) | 1215 (14.5) |  |
 Skilled workers | 665 (6.4) | 94 (7.1) | 570 (6.8) |  |
 Unskilled and semiskilled workers | 1204 (11.6) | 233 (17.5) | 968 (11.6) |  |
 Self-employed (other than professional) | 729 (7.0) | 80 (6.0) | 649 (7.7) |  |
 Students | 435 (4.2) | 122 (9.2) | 311 (3.7) |  |
 Retired | 552 (5.3) | 88 (6.6) | 459 (5.5) | < 0.001 |
IHD | 193 (1.9) | 47 (3.2) | 143 (1.6) | < 0.001 |
Stroke | 86 (0.8) | 23 (1.5) | 63 (0.7) | 0.003 |
Hypertension | 716 (6.9) | 126 (8.5) | 590 (6.7) | 0.01 |
Diabetes mellitus | 221 (2.1) | 38 (2.6) | 181 (2.0) | 0.20 |
Smoking c | ||||
 Regular | 1289 (12.4) | 306 (24.5) | 983 (13.6) | < 0.001 |
 Occasional smoker | 889 (8.6) | 148 (11.9) | 741 (10.3) |  |
 Ex-smoker | 2502 (24.1) | 331 (26.5) | 2171 (30.0) |  |
 Never smoker | 3796 (36.6) | 462 (37.0) | 3333 (46.1) |  |
Physical inactivity c | 3936 (46.3) | 697 (55.9) | 3237 (44.6) | < 0.001 |
Mean BMI (SD) in kg/m2 | 24.97 (3.9) | 25.13 (4.4) | 24.93 (3.7) | 0.1 |
Hazardous alcohol use | 2605 (25.2) | 544 (36.6) | 2060 (23.3) | < 0.001 |
Treated for psychiatric disorders | 2365 (22.8) | 821 (55.2) | 1542 (17.5) | < 0.001 |
Non-cardiovascular morbidity | 1356 (13.1) | 323 (21.7) | 1026 (11.6) | < 0.001 |
Cardiovascular diseases during follow-up | 676 (6.5) | 109 (7.3) | 564 (6.4) | 0.09 |
Ischemic/hypertensive heart | 435 (4.2) | 71 (4.8) | 361 (4.1) | 0.12 |
Stroke | 298 (2.9) | 53 (3.6) | 245 (2.8) | 0.05 |