Table 1.
Socio-demographic characteristics of sample.
| Sample Characteristics | n | % |
|---|---|---|
| Gender | ||
| Boy | 2331 | 50.7 |
| Girl | 2270 | 49.3 |
| Grade | ||
| Grade 9 in primary school (15 y) | 2264 | 48.4 |
| Year 2 in high school (17 y) | 2417 | 51.6 |
| Family structure | ||
| Live with both parents who live together | 2966 | 65.5 |
| Parents separated—alternate living arrangements | 498 | 11.0 |
| Live mostly or exclusively with one parent | 995 | 21.9 |
| Foster care | 72 | 1.6 |
| Birth region | ||
| Nordic countries | 4184 | 88.7 |
| Outside the Nordic region | 532 | 11.3 |
| Family economy | ||
| Good economy | 4528 | 96.7 |
| Poor economy | 153 | 3.3 |
| Disability | ||
| No | 3748 | 85.2 |
| Yes | 649 | 14.8 |