Descriptive characteristics of the participants at baseline by trajectories of psychological distress
| Trajectories | |||||
|---|---|---|---|---|---|
| All (N=6890), n (%) | ‘Persistently low’ (N=4731), n (%) | ‘Persistently intermediate’ (N=882), n (%) | ‘Intermediate to low’ (N=807), n (%) | ‘Persistently high’ (N=470), n (%) | |
| Age (years) | |||||
| <50 | 3721 (54.0) | 2376 (50.2) | 477 (54.1) | 573 (71.0) | 295 (62.7) |
| ≥50 | 3169 (45.9) | 2355 (49.8) | 405 (45.9) | 234 (29.0) | 175 (37.2) |
| Sex | |||||
| Male | 4814 (69.9) | 3447 (72.9) | 572 (64.9) | 521 (64.6) | 274 (58.3) |
| Female | 2076 (30.1) | 1284 (27.1) | 310 (35.2) | 286 (35.4) | 196 (41.7) |
| Socioeconomic status | |||||
| High | 2730 (39.6) | 1933 (40.9) | 343 (38.9) | 314 (38.9) | 140 (29.8) |
| Intermediate | 3117 (45.2) | 2096 (44.3) | 398 (45.1) | 389 (48.2) | 234 (49.8) |
| Low | 1043 (15.1) | 702 (14.8) | 141 (16.0) | 104 (12.9) | 96 (20.4) |
| Smoking | |||||
| No | 6023 (87.4) | 4189 (88.5) | 750 (85.0) | 699 (86.6) | 385 (81.9) |
| Yes | 867 (12.6) | 542 (11.5) | 132 (15.0) | 108 (13.4) | 85 (18.1) |
| Alcohol use | |||||
| No | 1274 (18.5) | 855 (18.1) | 176 (20.0) | 133 (16.5) | 110 (23.4) |
| Within recommended limits | 4525 (65.7) | 3147 (66.5) | 558 (63.3) | 534 (66.2) | 286 (60.9) |
| Above recommended limits | 1091 (15.8) | 729 (15.4) | 148 (16.8) | 140 (17.4) | 74 (15.7) |
| Obesity | |||||
| No | 6257 (90.8) | 4335 (91.6) | 780 (88.4) | 734 (91.0) | 408 (86.8) |
| Yes | 633 (9.2) | 396 (8.4) | 102 (11.6) | 73 (9.1) | 62 (13.2) |
| Hypertension | |||||
| No | 5488 (79.7) | 3741 (79.1) | 699 (79.3) | 669 (82.9) | 379 (80.6) |
| Yes | 1402 (20.4) | 990 (20.9) | 183 (20.8) | 138 (17.1) | 91 (19.4) |
| High total cholesterol (≥5.0 mmol/L) | |||||
| No | 601 (8.7) | 402 (8.5) | 66 (7.5) | 88 (10.9) | 45 (9.6) |
| Yes | 6289 (91.3) | 4329 (91.5) | 816 (92.5) | 719 (89.1) | 425 (90.4) |
| Total cholesterol level (mmol/L) | |||||
| <5.0 | 601 (8.8) | 402 (8.6) | 66 (7.6) | 88 (11.0) | 45 (9.7) |
| 5.0–<6.5 | 3050 (44.6) | 2066 (44.0) | 380 (43.5) | 381 (47.6) | 223 (48.0) |
| ≥6.5 | 3187 (46.6) | 2232 (47.5) | 427 (48.9) | 331 (41.4) | 197 (42.4) |
| Diabetes | |||||
| No | 6701 (97.3) | 4597 (97.2) | 857 (97.2) | 786 (97.4) | 461 (98.1) |
| Yes | 183 (2.7) | 134 (2.8) | 25 (2.8) | 21 (2.6) | 9 (1.9) |
| Coronary heart disease | |||||
| No | 6689 (97.1) | 4610 (97.4) | 850 (96.4) | 781 (96.8) | 448 (95.3) |
| Yes | 201 (2.9) | 121 (2.6) | 32 (3.6) | 26 (3.2) | 22 (4.7) |