Table 4. Differences in mean haemoglobin between interventions and control estimated using regression models with house as a random effect, with and without adjusting for covariate imbalance.
| Haemoglobin density (g/L) |
||||||
|---|---|---|---|---|---|---|
| N | Mean hb | Difference from control |
Difference from control* |
95%C.I. | p | |
|
|
||||||
| Control | 158 | 100.3 | - | - | - | - |
| Ceiling | 264 | 104.3 | 3.6 | 4.2 | 0.6-7.7 | 0.021 |
| Full | 309 | 104.1 | 3.7 | 3.7 | 0.3-7.2 | 0.034 |
*
Adjusted for location, year, child’s age, SES, wall material and, measured each night, the no. of horses in compound, people sleeping in the house.