Table 1 Baseline characteristics of intervention and control schoolchildren, by sex
Intervention group | Control group | |||
|---|---|---|---|---|
Girls (n = 229) | Boys (n = 191) | Girls (n = 240) | Boys (n = 252) | |
Age, mean ± SD, years | 9.4 ± 0.7 | 9.4 ± 0.7 | 9.5 ± 0.7 | 9.5 ± 0.7 |
Born abroad, % | 12.7 | 12.0 | 14.2 | 17.1 |
Birth weight, kg | 3.2 ± 0.5 | 3.4 ± 0.5 | 3.2 ± 0.5 | 3.2 ± 0.4 |
Tanner stage, % | ||||
Stage 1 | 61.2 | 55.9 | 66.0 | 62.5 |
Stage 2 | 30.4 | 42.8 | 26.7 | 33.3 |
Stage ≥3 | 8.4 | 1.3 | 7.3 | 4.2 |
Highest parental educational level, % | ||||
Primary or lower | 7.3 | 3.6 | 8.7 | 5.2 |
Secondary | 65.1 | 81.0 | 73.3 | 75.2 |
University | 27.5 | 15.5 | 18.0 | 19.6 |
Highest parental employment status, % | ||||
Housewife, student or unemployed | 9.0 | 7.1 | 9.2 | 9.2 |
Employee | 38.7 | 54.8 | 40.5 | 39.9 |
Self-employed | 52.3 | 38.1 | 50.3 | 51.0 |