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

PHI pupae per household index, PPI pupae per person index