Baseline characteristics of the study population
| N | % | Mean | SD | |
| Age | 45.3 | 11.4 | ||
| Sex | ||||
| Women | 13 921 | 52.7 | ||
| Men | 12 489 | 47.3 | ||
| Education | ||||
| Primary and lower secondary education | 3751 | 14.2 | ||
| Upper and post secondary education | 11 244 | 42.6 | ||
| First stage tertiary education | 7859 | 29.8 | ||
| Second stage tertiary education | 3556 | 13.5 | ||
| Cohabitation | ||||
| Yes | 20 524 | 77.7 | ||
| No | 5886 | 22.3 | ||
| Children living at home | ||||
| No children | 14 694 | 55.6 | ||
| At least one child aged 0–7 years | 5174 | 19.6 | ||
| At least one child aged 8–17 years (no children younger than 8 years) | 6542 | 24.8 | ||
| MDI | 8.1 | 7.4 | ||
| Perceived emotional demands at work | 2.8 | 1.0 | ||
| Never/seldom | 9525 | 36.1 | ||
| Sometimes | 10 567 | 40.0 | ||
| Often | 5171 | 19.6 | ||
| Always | 1147 | 4.3 | ||
| Content-related emotional demands at work | 3.0 | 1.2 | ||
| Never/seldom | 9947 | 37.7 | ||
| Sometimes | 7368 | 27.9 | ||
| Often | 5386 | 20.4 | ||
| Always | 3709 | 14.0 | ||
MDI, Major Depression Inventory.