Baseline characteristics of both groups
| Control group (N=237) | Intervention group (N=272) | p Value | |
| Girls | 108 (45.6%) | 126 (46.3%) | NS |
| BMI | 16.4 (2.7) | 16.9 (2.3) | 0.024 |
| Height | 1.21 (0.06) | 1.19 (0.06) | NS |
| Walks to school | 112 (47.3%) | 139 (51.1%) | NS |
| Time to walk to school | |||
| No answer | 1 | 1 | |
| Less than 10 min | 58 (52.3%) | 65 (47.1%) | NS |
| 10–20 min | 42 (37.8%) | 51 (37.0%) | NS |
| >20 min | 11 (9.9%) | 22 (15.9%) | NS |
| Eats at school | 65 (27.4%) | 120 (44.2%) | 0.001 |
| Exercises | 114 (48.1%) | 142 (52.2%) | NS |
| Father's height | 1.74 (0.07) | 1.75 (0.07) | NS |
| Mother's height | 1.61 (0.07) | 1.62 (0.07) | NS |
| Immigrant | 49 (20.7%) | 47 (17.3%) | NS |
| Reported answer | Control group N=159 | Intervention group N=216 | p Value |
| Hours of television per day | NS | ||
| <2 h/day | 116 (73.0%) | 172 (79.6%) | |
| >2 h/day | 43 (27.0%) | 44 (20.4%) | |
| BMI father | 26.1 (3.1) | 26.1 (3.7) | NS |
| BMI mother | 23.4 (3.6) | 23.3 (3.7) | NS |
| Level of education father | 0.055 | ||
| Does not read and write | 4 (2.5%) | 7 (3.3%) | |
| Primary | 48 (30.8%) | 37 (17.4%) | |
| Secondary | 70 (44.9%) | 115 (54.0%) | |
| University | 34 (21.8%) | 54 (25.3%) | |
| Level of education mother | NS | ||
| Does not read and write | 2 (1.3%) | 6 (2.8%) | |
| Primary | 43 (27.2%) | 38 (17.4%) | |
| Secondary | 75 (47.5%) | 109 (49.8%) | |
| University | 38 (24.0%) | 66 (30.1%) |
BMI, body mass index; NS, not significant.