Table 1. Social and demographic background of study population.
| Number (%) | |
|---|---|
| Gender | |
| Boys | 202 (51.3) |
| Girls | 192 (48.7) |
| Age of the child | |
| 4–5 year | 126 (32.0) |
| 6–7 years | 124 (31.5) |
| 8–10 years | 144 (35.6) |
| Ethnic background | |
| Dutch | 373 (94.7) |
| Non-Dutch | 5 (1.4) |
| Education Father | |
| Lower education | 79 (20.0) |
| Medium education | 140 (35.5) |
| Higher education | 141 (35.8) |
| Education Mother | |
| Lower education | 73 (18.5) |
| Medium education | 179 (45.4) |
| Higher education | 113 (28.7) |
Missing data: ethnic background n = 16, education father n = 34, education mother n = 29. Lower education: no education, primary education or pre-vocational education; Medium education: secondary vocational education; Higher education; university or higher vocational education.