Table 1 Characteristics of the study population: total sample and sample according to socio-economic status (SES)
Total sample | Low SES | Intermediate SES | High SES | P-value | |
|---|---|---|---|---|---|
Mean age N (%) | N = 1317 | N = 263 | N = 628 | N = 426 | 0.00 |
-11 years | 1119 (85.0) | 205 (77.9) | 528 (84.1) | 386 (90.6) | |
> 11 years | 198 (15.0) | 58 (22.1) | 100 (15.9) | 40 (9.4) | |
Gender % | N = 1318 | N = 263 | N = 629 | N = 426 | 0.02 |
Boys | 50.8 | 52.5 | 46.7 | 55.6 | |
Girls | 49.2 | 47.5 | 53.3 | 44.4 | |
Child’s BMI % | N = 1283 | N = 252 | N = 616 | N = 415 | 0.01 |
Overweight | 11.2 | 16.7 | 10.6 | 8.9 | |
No overweight | 88.8 | 83.3 | 89.4 | 91.9 | |
Child’s ethnicity % | N = 1318 | N = 263 | N = 629 | N = 426 | 0.02 |
Native Dutch | 88.8 | 84.4 | 90.9 | 89.4 | |
Immigrant | 11.2 | 15.6 | 9.1 | 10.6 |