Table I.
Descriptive characteristics of the sample.
| Variable | Total number (%) | No. of boys (valid %) | No. of girls (valid %) |
|---|---|---|---|
| Sex | 1805 (99.4) | 871 (48.3) | 934 (51.7) |
| Missing data | 11 (0.6) | ||
| Place of birth | |||
| Born in Norway | 1677 (92.3) | 808 (45.1) | 862 (48.1) |
| Born in another country | 123 (6.8) | 57 (3.2) | 66 (3.6) |
| Missing data | 16 (0.9) | ||
| Family economy | |||
| Bad economy all the time | 34 (1.9) | 12 (0.7) | 22 (1.2) |
| More or less bad economy | 76 (4.2) | 24 (1.4) | 52 (2.9) |
| Neither bad or good economy | 406 (22.4) | 194 (10.9) | 211 (11.9) |
| More or less good economy | 580 (31.9) | 292 (16.5) | 285 (16.2) |
| Good economy all the time | 683 (37.6) | 334 (18.8) | 346 (19.5) |
| Missing data | 37 (2.0) | ||
| Loneliness | |||
| Never or very rarely | 399 (22.0) | 267 (15.1) | 132 (7.5) |
| Rarely | 463 (25.5) | 253 (14.3) | 207 (11.7) |
| Sometimes | 626 (34.5) | 236 (13.3) | 388 (21.9) |
| Often | 195 (10.7) | 57 (3.2) | 137 (7.7) |
| Very often | 92 (5.0) | 31 (1.8) | 60 (3.5) |
| Missing data | 41 (2.3) | ||
| Parents’ education | Mother/father | Mother/father | Mother/father |
| Primary and lower secondary school | 70 (3.9)/91 (5.0) | 26 (1.5)/37 (2.1) | 44 (2.5)/54 (3.1) |
| Upper secondary school | 302 (16.6)/355 (19.5) | 148 (8.5)/183 (10.6) | 154 (8.8)/170 (9.9) |
| University (⩽4 years) | 452 (24.9)/308 (17.0) | 209 (11.9)/138 (8.0) | 241 (13.8)/169 (9.8) |
| University (>4 years) | 455 (25.1)/453 (24.9) | 212 (12.1)/211 12.3) | 240 (13.7)/239 (13.9) |
| Unknown | 478 (26.3)/522 (28.7) | 246 (14.1)/259 (15.0) | 230 (13.1)/262 (15.3) |
| Missing data | 59 (3.2)/ 87 (4.9) | ||
| Total | 1816 (100) |