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Sample characteristics (n = 28,105)
| Characteristic | n (%) |
|---|---|
| Gender | |
| male | 13,171 (47) |
| female | 13,243 (47) |
| missing | 1691 (6) |
| Education | |
| lower secondary school | 16,746 (60) |
| - grade 8 | 5754 (20) |
| - grade 9 | 5565 (20) |
| - grade 10 | 5365 (19) |
| upper secondary school | 11,359 (40) |
| - year 1 | 4528 (16) |
| - year 2 | 3721 (13) |
| - year 3 | 3085 (11) |
