| Participants | Non-participants1 |  | ||||
---|---|---|---|---|---|---|---|
Child | N | Mean | SD | N | Mean | SD | p value |
Age | 496 | 11.80 | 3.20 | 81 | 11.44 | 2.75 | .33 |
 | N | % |  | N | % |  |  |
Gender (boys) | 227 | 45.8 | Â | 35 | 43.8 | Â | .74 |
Parent 2 | N | Mean | SD | N | Mean | SD | Â |
Age | 479 | 44.35 | 5.73 | 82 | 43.16 | 6.29 | .09 |
 | N | % |  | N | % |  |  |
Gender (male) | 92 | 19.4 | Â | 31 | 36.5 | Â | <.01** |
Ethnicity (Dutch) | 414 | 85.9 | Â | 53 | 62.4 | Â | <.01** |
Education (high) | 230 | 48.4 | Â | 30 | 38.0 | Â | <.05* |
Employment | 349 | 72.9 | Â | 52 | 62.7 | Â | .06 |