Table 2. Mean utility scores and QALYs per child by treatment arm.
| n | Intervention arm, mean (95% CI) | Control arm, mean (95% CI) | |
|---|---|---|---|
| Utility score | |||
| Baseline | 1350 | 0.836 (0.826 to 0.846) | 0.816 (0.805 to 0.827) |
| FU 1 | 1215 | 0.868 (0.868 to 0.877) | 0.858 (0.850 to 0.866) |
| FU 2 | 1128 | 0.893 (0.884 to 0.901) | 0.898 (0.891 to 0.905) |
| QALY Differences |
Mean Difference (95% CI) |
p-value | |
| Unadjusted | |||
| FU1 | 0.018 (0.005 to 0.031) | 0.006 | |
| FU2 | 0.019 (-0.003 to 0.041) | 0.097 | |
| Adjusted * | |||
| FU 1 | 0.005 (-0.008 to 0.018) | 0.429 | |
| FU 2 | 0.006 (-0.024 to 0.036) | 0.701 |
*adjusted for baseline cluster-level covariates (school size, proportion of children eligible for free school meals, ethnicity) and baseline child-level covariates (gender, baseline CHU9D score, ethnicity, deprivation, baseline total energy consumption and baseline physical activity energy expenditure).