Sample characteristics.
| Characteristic | n (%)a |
|---|---|
| Mean age, years (SD) | 37.7 (13.2) |
| Males | 280 (26) |
| Main activity | |
| Employed or self-employed | 590 (59) |
| Retired | 63 (6) |
| Housework | 141 (14) |
| Student | 73 (7) |
| Seeking work | 61 (6) |
| Other | 78 (8) |
| Educated beyond minimum school age | 572 (57) |
| Educated to degree level | 345 (35) |
↵a Maximum n = 1063.