Table 4.
Secondary outcomes (body mass index z-score, waist circumference and body mass index) at baseline and at the end of the study in the intervention and control groups
| Baseline (mean (95% CI)) | End of study (mean (95% CI)) | Baseline vs end of study ( P value) | Intervention vs control ( P value) | |||
|---|---|---|---|---|---|---|
| Body mass index z-score |
Intervention |
Boys |
0.01 (−0.07, 0.10) |
−0.04 (−0.11, 0.04) |
0.367 |
<0.001 |
| |
|
Girls |
0.00 (−0.08, 0.08) |
−0.01 (−0.09, 0.06) |
0.755 |
<0.001 |
| |
|
Total |
0.05 (−0.01, 0.11) |
−0.03 (−0.08, 0.03) |
0.388 |
<0.001 |
| |
Control |
Boys |
−0.10 (−0.20, 0.00) |
0.09 (−0.03, 0.21) |
0.015 |
|
| |
|
Girls |
−0.02 (−0.12, 0.08) |
−0.03 (−0.14, 0.08) |
0.941 |
|
| |
|
Total |
−0.11 (−0.18, -0.04) |
0.01 (−0.07, 0.09) |
0.105 |
|
| Waist circumference (cm) |
Intervention |
Boys |
60.69 (60.07, 61.30) |
67.44 (66.73, 68.16) |
<0.001 |
0.269 |
| |
|
Girls |
58.98 (58.39, 59.57) |
65.96 (65.24, 66.67) |
<0.001 |
0.108 |
| |
|
Total |
59.85 (59.42, 60.28) |
66.72 (66.21, 67.22) |
<0.001 |
0.043 |
| |
Control |
Boys |
59.80 (59.04, 60.57) |
66.39 (65.39, 67.38) |
<0.001 |
|
| |
|
Girls |
60.04 (59.20, 60.88) |
66.10 (65.10, 67.10) |
<0.001 |
|
| |
|
Total |
59.93 (59.36, 60.50) |
66.24 (65.54, 66.94) |
<0.001 |
|
| Body mass index (kg/m2) |
Intervention |
Boys |
17.73 (17.48, 17.97) |
18.86 (18.60, 19.13) |
<0.001 |
0.442 |
| |
|
Girls |
17.65 (17.39, 17.91) |
18.76 (18.49, 19.04) |
<0.001 |
0.596 |
| |
|
Total |
17.69 (17.51, 17.87) |
18.82 (18.63, 19.01) |
<0.001 |
0.381 |
| |
Control |
Boys |
17.00 (16.71, 17.30) |
18.48 (18.10, 18.86) |
<0.001 |
|
| |
|
Girls |
17.17 (16.85, 17.48) |
18.28 (17.92, 18.64) |
<0.001 |
|
| Total | 17.09 (16.87, 17.30) | 18.38 (18.12, 18.64) | 0.001 |
Continuous outcomes were analyzed through mixed models of repeated measures. Analyses were performed with the modified intention-to-treat analysis.