Table 1.
Anthropometric characteristics of participants and non-participants in the school milk program in South Korea.
| Variables | Boys | Girls | ||||
|---|---|---|---|---|---|---|
| Participants (n = 167) |
Non-Participants (n = 153) |
Total (n = 320) |
Participants (n = 179) |
Non-Participants (n = 193) |
Total (n = 372) |
|
| Age (years) | 14.1 ± 0.1 1,***,2 | 13.6 ± 0.0 | 13.8 ± 0.0 | 13.9 ± 0.1 *** | 13.5 ± 0.0 | 13.7 ± 0.0 |
| Height (cm) | 168.9 ± 0.6 * | 167.0 ± 0.6 | 168.0 ± 0.4 | 158.6 ± 0.4 ** | 160.0 ± 0.4 | 159.3 ± 0.3 |
| Weight (kg) | 59.3 ± 0.9 ** | 55.9 ± 0.8 | 57.6 ± 0.6 | 49.6 ± 0.6 NS | 49.5 ± 0.5 | 49.5 ± 0.4 |
| BMI (kg/m2) 3 | 20.7 ± 0.3 * | 19.9 ± 0.2 | 20.3 ± 0.2 | 19.7 ± 0.2 NS | 19.3 ± 0.2 | 19.5 ± 0.1 |
| Total (n(%)) | 167 (52.2) | 153 (47.8) | 320 (46.2) | 179 (48.1) | 193 (51.9) | 372 (53.8) |
1 Mean ± Standard error of mean. 2 * p < 0.05. ** p < 0.01. *** p < 0.001. NS: not significant difference (α = 0.05). 3 BMI = weight(kg)/height(m2). Underweight: <18.5 kg/m2, normal weight: 18.5–22.9 kg/m2, overweight: 23.0–24.9 kg/m2, obese: ≥25.0 kg/m2 [19].