Table 1.
Demographic characteristic of the adolescents with available SDQ self-reported data (n = 993), with available SDQ parent-reported data (n = 736), and the Dutch population
| Characteristics | SDQ informant version | Dutch populationa | |
|---|---|---|---|
| Self-report | Parent | ||
| N (%) | N (%a) | % | |
| Gender | |||
| Male | 466 (46.9) | 345 (46.9) | 49.5 |
| Female | 527 (53.1) | 391 (53.1) | 50.5 |
| Age | |||
| 12 | 82 (8.3) | 68 (9.2) | 16.5 |
| 13 | 253 (25.5) | 186 (25.3) | 16.3 |
| 14 | 249 (25.1) | 190 (25.8) | 16.4 |
| 15 | 151 (15.2) | 127 (17.3) | 16.9 |
| 16 | 151 (15.2) | 97 (13.2) | 16.9 |
| 17 | 107 (10.8) | 68 (9.2) | 17.1 |
| Native country mother | |||
| The Netherlands | 885 (89.1) | 668 (90.8) | 78.6 |
| Other | 108 (10.9) | 68 (9.2) | 21.4 |
| Educational level mother | |||
| Low | 238 (24.0) | 163 (22.1) | 23.6 |
| Medium | 411 (41.4) | 320 (43.5) | 41.7 |
| High | 344 (34.6) | 253 (34.4) | 34.7 |
SDQ Strengths and Difficulties Questionnaire
athe information on the distributions in the Dutch population was retrieved from Statistics Netherlands [39]