Sample characteristics ages 18–64, % (SE)
| Variable | Unweighted N | % (SE) |
|---|---|---|
| N | 9342 | |
| Sex | ||
| Male | 4986 | 50.31 (0.17) |
| Female | 4356 | 49.69 (0.17) |
| Age, mean (range) | 40.77 (18–64) | |
| Baseline migraine/depression comorbidity | ||
| None | 7619 | 85.41 (0.49) |
| Depression only | 404 | 4.13 (0.29) |
| Migraine only | 839 | 9.13 (0.40) |
| Depression and migraine | 124 | 1.33 (0.17) |
| Childhood trauma | ||
| 0 | 4194 | 49.61 (0.74) |
| 1 | 2265 | 25.82 (0.64) |
| 2+ | 2274 | 24.57 (0.65) |
| Recent marital change to divorced, separated or widowed | ||
| Yes | 214 | 2.47 (0.23) |
| No | 8781 | 97.53 (0.23) |
| Recent unemployment | ||
| Yes | 394 | 4.34 (0.32) |
| No | 8670 | 95.66 (0.32) |
| Recent change in social support | ||
| Yes | 1359 | 16.76 (0.60) |
| No | 6961 | 83.24 (0.60) |
| Years of follow-up | ||
| Median | 7.30 | |
| IQR | 6.29–7.67 |