Participants n (%) | Non-participants n (%) | Cohen effect size W | |
---|---|---|---|
Child gender | 0.01 | ||
Boy | 229 (50.3) | 309 (49.6) | |
Girl | 226 (49.7) | 314 (50.4) | |
Ethnicity | 0.12 | ||
Dutch | 406 (89.8) | 494 (81.1) | |
Migrant | 46 (10.2) | 115 (18.9) | |
Child age | |||
10 years | 234 (52.1) | NAa | |
11 years | 215 (47.9) | ||
Total | 461 (41.3) | 656 (58.7) |