Table 3 Cluster t-tests of differences in PHI and PPI between intervention and control clusters in rainy and dry seasons
Rainy season | Dry season | |||
|---|---|---|---|---|
PHI | ||||
Overall mean = 0.58 | Overall mean = 0.61 | |||
Intervention clusters | Control clusters | Intervention clusters | Control clusters | |
Mean | 0.46 | 0.82 | 0.41 | 0.83 |
Proportion of households above overall mean | 0.07 | 0.11 | 0.06 | 0.10 |
Difference in proportion of households above mean between intervention and control clusters | - 0.04 | - 0.04 | ||
Cluster adjusted 95% CI of difference | −0.065 to −0.012 | −0.065 to −0.007 | ||
t value | 2.961 | 2.294 | ||
Degrees of freedom | 88 | 88 | ||
P value | p = 0.004 | p = 0.024 | ||
PPI | ||||
Overall mean = 0.17 | Overall mean = 0.20 | |||
Intervention clusters | Control clusters | Intervention clusters | Control clusters | |
Mean | 0.11 | 0.19 | 0.10 | 0.20 |
Proportion of households above overall mean | 0.03 | 0.05 | 0.03 | 0.05 |
Difference in proportion of households above mean between intervention and control clusters | - 0.02 | −0.02 | ||
Cluster adjusted 95% CI of difference | −0.034 to −0.003 | −0.042 to −0.006 | ||
t value | 2.290 | 2.500 | ||
Degrees of freedom | 88 | 88 | ||
P value | p = 0.024 | p = 0.014 | ||