Table 4.
Change in BMI status between intervention and control
| Pre-Intervention | Post-Intervention | Intervention (m = 8) | Control (m = 8) | Differences in Mean percentage (SE)b | Intervention Effect p-value† |
Sidak p-value+ |
|---|---|---|---|---|---|---|
| Mean percentage of students by school (SE)a | Mean percentage of students by school (SE)a | |||||
| Normal/underweight | Normal/underweight | 52.64(2.09) | 49.34(1.81) | −3.3(2.76) | 0.25 | 0.93 |
| Normal/underweight | Overweight | 2.68(0.42) | 2.83(0.45) | 0.15(0.614) | 0.81 | 1 |
| Normal/underweight | Obese | 0.26(0.17) | 0.33(0.14) | 0.07(0.222) | 0.75 | 1 |
| Overweight | Normal/underweight | 3.69(0.55) | 5.42(0.45) | 1.74(0.712) | 0.03 | 0.23 |
| Overweight | Overweight | 11.75(1.15) | 13.04(0.95) | 1.3(1.49) | 0.40 | 0.99 |
| Overweight | Obese | 1.42(0.37) | 1.88(0.41) | 0.46(0.55) | 0.42 | 0.99 |
| Obese | Normal/underweight | 0.21(0.11) | 0.06(0.06) | −0.15(0.12) | 0.22 | 0.90 |
| Obese | Overweight | 3.08(0.51) | 2.60(0.39) | −0.49(0.64) | 0.46 | 1 |
| Obese | Obese | 24.28(1.64) | 24.50(1.40) | 0.22(2.15) | 0.92 | 1 |
BMI body mass index
a Weighted mean percentage and standard error of the mean percentage (SE) of each category change. Weighted refers to total number of participants within each school
bDifferences of the weighted mean percentage between intervention and control and standard error of the differences in the weighted mean percentage of each category change
†T-Tests were used to determine differences in categorical weight status between intervention and control groups by each change of weight status combination
+Sidak p-value: adjusted for multiple comparison