Anthropometric characteristics of pupils at baseline: intervention versus control group
| Intervention group | Control group | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Mean (95% CI) | Mean (95% CI) | Intervention vs control; p value* | Intervention vs control; p value* | Intervention vs control; p value* | |||||
| Boys (n=165) | Girls (n=155) | Total (n=320) | Boys (n=196) | Girls (n=174) | Total (n=370) | Boys | Girls | Total | |
| Age, years | 8.01 (7.91 to 8.12) | 7.97 (7.88 to 8.07) | 7.99 (7.92 to 8.06) | 8.11 (8.03 to 8.19) | 8.06 (7.97 to 8.15) | 8.09 (8.03 to 8.15) | 0.105 | 0.153 | 0.967 |
| Weight, kg | 30.35 (29.22 to 31.48) | 29.86 (28.81 to 30.91) | 30.11 (29.34 to 30.88) | 31.29 (30.26 to 32.33) | 31.35 (30.36 to 32.34) | 31.32 (30.60 to 32.04) | 0.226 | 0.043 | 0.024 |
| BMI, kg/m2 | 17.40 (16.93 to 17.86) | 17.42 (16.97 to 17.88) | 17.41 (17.09 to 17.73) | 17.70 (17.28 to 18.13) | 17.94 (17.51 to 18.37) | 17.82 (17.51 to 18.12) | 0.340 | 0.104 | 0.073 |
| Height, m | 1.32 (1.30 to 1.33) | 1.30 (1.29 to 1.31) | 1.31 (1.30 to 1.32) | 1.32 (1.31 to 1.33) | 1.32 (1.31 to 1.33) | 1.32 (1.31 to 1.33) | 0.242 | 0.045 | 0.027 |
| Fat mass, kg | 6.71 (5.99 to 7.42) | 7.11 (6.50 to 7.72) | 6.90 (6.42 to 7.38) | 6.44 (5.78 to 7.09) | 7.70 (7.12 to 8.27) | 7.03 (6.59 to 7.47) | 0.584 | 0.167 | 0.698 |
| Lean mass, kg | 23.99 (23.34 to 24.64) | 22.86 (22.32 to 23.39) | 23.44 (23.02 to 23.87) | 24.88 (24.28 to 25.47) | 23.71 (23.21 to 24.22) | 24.33 (23.93 to 24.73) | 0.049 | 0.022 | 0.003 |
| Waist circumference, cm | 60.97 (59.68 to 62.27) | 59.91 (58.67 to 61.15) | 60.46 (59.56 to 61.36) | 64.37 (63.18 to 65.56) | 65.17 (64.00 to 66.34) | 64.75 (63.91 to 65.58) | <0.001 | <0.001 | <0.001 |
The results are expressed as mean (95% CI).
*p Value: GLM statistic.
BMI, body mass index; GLM, general linear model.