| Age 4–6 years b | Age 7–9 years | Age 10–12 years b | Total (n = 3,651) | |||
---|---|---|---|---|---|---|---|
 | Boys (n = 637) | Girls (n = 611) | Boys (n = 692) | Girls (n = 665) | Boys (n = 520) | Girls (n = 526) |  |
Age (years) | 5.0 (0.8) | 5.0 (0.8) | 8.0 (0.8) | 8.0 (0.8) | 10.7 (0.7) | 10.7 (0.7) | 7.8 (2.4) |
BMI c (kg/m2) | 15.4 (2.0) | 15.2 (2.2) | 16.3 (2.7) | 16.4 (2.7) | 17.5 (3.2) | 17.4 (2.8) | 16.3 (2.7) |
Overweight d (%) | 6.5 | 10.2 | 11.2 | 12.9 | 10.6 | 11.7 | 10.5 |
Obesity d (%) | 3.4 | 3.8 | 3.1 | 4.3 | 2.7 | 1.3 | 3.2 |
Parental education level (%) | Â | Â | Â | Â | Â | Â | Â |
- Low e | 25.3 | 26.4 | 29.5 | 28.1 | 35.0 | 35.6 | 29.6 |
- Intermediate f | 36.6 | 40.6 | 36.4 | 37.4 | 33.3 | 31.9 | 36.2 |
- High g | 38.1 | 33.1 | 34.1 | 34.4 | 31.7 | 32.5 | 34.1 |
Net household income (Euros per month) | 2,754 (1,230) | 2,818 (1,277) | 2,814 (1,303) | 2,761 (1,326) | 2,720 (1,345) | 2,596 (1,289) | 2,751 (1,295) |
Outdoor play (minutes per week) | 408 (266) | 378 (256) | 455 (289)* | 398 (272)* | 444 (284)* | 381 (285)* | 411 (277) |