Table 1.
Baseline characteristics in two depressive episodes trajectory groups
| Variables | N total | Depressive episodes trajectory groups | ||
|---|---|---|---|---|
| Low/transient N (%) |
Increasing N (%) |
p-value | ||
| Age, Mean (SD) | 10302 | 44.56 (6.06) | 43.55 (5.89) | <0.0001 |
| Sex | 0.003 | |||
| Women | 3413 | 2981 (87.3) | 432 (12.7) | |
| Men | 6889 | 6153 (89.3) | 736 (10.7) | |
| Ethnicity | 0.21 | |||
| White | 9177 | 8149 (88.8) | 1028 (11.2) | |
| Other | 1125 | 985 (87.6) | 140 (12.4) | |
| Marital status | <0.0001 | |||
| Married/cohabiting | 7603 | 6823 (89.7) | 780 (10.3) | |
| Other | 2661 | 2278 (85.6) | 383 (14.4) | |
| Missing | 38 | 33 (86.8) | 5 (13.2) | |
| Socioeconomic status | 0.0005 | |||
| High | 3027 | 2739 (90.5) | 288 (9.5) | |
| Intermediate | 4939 | 4354 (88.2) | 585 (11.8) | |
| Low | 2336 | 2041 (87.4) | 295 (12.6) | |
| Physical activity | <0.0001 | |||
| No | 3261 | 2820 (86.5) | 441 (13.5) | |
| Yes | 6529 | 5856 (89.7) | 673 (10.3) | |
| Missing | 512 | 458 (89.5) | 54 (10.5) | |
| Smoking status | 0.30 | |||
| Never | 5062 | 4486 (88.6) | 576 (11.4) | |
| Ex | 3269 | 2921 (89.4) | 348 (10.6) | |
| Current | 1882 | 1649 (87.6) | 233 (12.4) | |
| Missing | 89 | 78 (87.6) | 11 (12.4) | |
| High alcohol intake | 0.001 | |||
| No | 8609 | 7672 (89.1) | 937 (10.9) | |
| Yes | 1599 | 1386 (86.7) | 213 (13.3) | |
| Missing | 94 | 76 (80.9) | 18 (19.1) | |
| BMI | 0.022 | |||
| <19.9 | 610 | 519 (85.1) | 91 (14.9) | |
| 20–24.9 | 5642 | 4996 (88.6) | 646 (11.4) | |
| 25–29.9 | 3314 | 2969 (89.6) | 345 (10.4) | |
| >30 | 726 | 642 (88.4) | 84 (11.6) | |
| Missing | 10 | 8 (80.0) | 2 (20.0) | |
| Cholesterol total >5mg/l | 0.34 | |||
| No | 2241 | 1970 (87.9) | 271 (12.1) | |
| Yes | 7989 | 7102 (88.9) | 887 (11.1) | |
| Missing | 72 | 62 (86.1) | 10 (13.9) | |
| Diabetes | 0.915 | |||
| No | 10202 | 9045 (88.7) | 1157 (11.3) | |
| Yes | 100 | 89 (89.0) | 11 (11.0) | |
| History of myocardial infarction | 0.58 | |||
| No | 10267 | 9104 (88.7) | 1163 (11.3) | |
| Yes | 35 | 30 (85.7) | 5 (14.3) | |
| History of stroke | 0.97 | |||
| No | 10275 | 9110 (88.7) | 1165 (11.3) | |
| Yes | 27 | 24 (88.9) | 3 (11.1) | |
| History of cancer | 0.98 | |||
| No | 10188 | 9033 (88.7) | 1155 (11.3) | |
| Yes | 114 | 101 (88.6) | 13 (11.4) | |
| Antihypertensive medication | 0.86 | |||
| No | 9967 | 8836 (88.7) | 1131 (11.3) | |
| Yes | 335 | 298 (89.0) | 37 (11.0) | |
| Antidepressive medication | <0.0001 | |||
| No | 10180 | 9073 (89.1) | 1107 (10.9) | |
| Yes | 122 | 61 (50.0) | 61 (50.0) | |
| SBP, Mean (SD) | 10290 | 123.32 (14.79) | 121.20 (14.41) | <0.0001 |
| DBS, Mean (SD) | 10289 | 77.03 (10.24) | 76.05 (10.14) | 0.0022 |
Note: BMI, body mass index; MI, myocardial infarction; SBP, systolic blood pressure; DBP, diastolic blood pressure