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Table 1 Descriptive socio-demographic characteristics of the study sample at baseline (n = 637)
| Total sample (n = 637) | Intervention condition (n = 349) | Control condition (n = 288) | p-value* | |
|---|---|---|---|---|
| Child characteristics | ||||
| Age, months (SD) [n = 0 missing] | 69.09 (5.18) | 68.65 (4.98) | 69.64 (5.37) | 0.016 |
| Sex, % boys [n = 0 missing] | 38.1 | 38.7 | 37.5 | 0.412 |
| Ethnic background, % Dutch [n = 11 missing] | 78.0 | 75.8 | 80.6 | 0.091 |
| BMI SDS (SD)§ [n = 0 missing] | 1.90 (0.37) | 1.93 (0.38) | 1.88 (0.35) | 0.087 |
| Parental characteristics | ||||
| Mothers | ||||
| Age, years (SD) [n = 81 missing] | 35.85 (4.29) | 35.80 (4.23) | 35.92 (4.37) | 0.741 |
| Country of birth, % the Netherlands [n = 4 missing] | 83.1 | 82.4 | 84.0 | 0.335 |
| Education level, % [n = 6 missing] | ||||
| Low | 7.3 | 7.8 | 6.6 | 0.238 |
| Low to mid-low | 26.0 | 27.0 | 24.8 | 0.086 |
| Mid-high to high | 44.7 | 40.0 | 50.3 | 0.721 |
| High | 22.0 | 25.2 | 18.2 | 0.003 |
| BMI, % overweight [n = 51 missing] | 44.0 | 44.5 | 43.4 | 0.422 |
| Fathers | ||||
| Age, years (SD) [n = 562 missing] | 40.19 (7.35) | 40.60 (7.87) | 39.71 (6.78) | 0.606 |
| Country of birth, % the Netherlands [n = 9 missing] | 83.6 | 80.8 | 87.0 | 0.022 |
| Education level, % [n = 18 missing] | ||||
| Low | 5.3 | 4.5 | 6.4 | 0.602 |
| Low to mid-low | 26.0 | 25.3 | 26.9 | 0.478 |
| Mid-high to high | 42.5 | 42.6 | 42.4 | 0.156 |
| High | 26.2 | 27.7 | 24.4 | 0.059 |
| BMI, % overweight [n = 252 missing] | 66.5 | 66.3 | 66.7 | 0.514 |
