Table 6. Waterborne disease incidence and child mortality (children aged <2 y) since implementation of continuous supply, ascertained at the third round of data collection.

	Intermittent Supply			Continuous Supply
	N	HHs with case	I a	N	HHs with case	I a	CIR	95% CI b	Adjusted CIR c	95% CI b	Regression p-value	Permutation test p-value d
Typhoid	1,690	103	60.9	1,711	58	33.9	0.56	(0.40–0.76)	0.58	(0.41–0.78)	0.001	0.43
Cholera	1,691	4	2.4	1,711	6	3.5	1.48	(0.37–6.92)	-- e	--	0.59	0.69
Hepatitis	1,690	46	27.2	1,711	59	34.5	1.27	(0.87–1.87)	1.13	(0.76–1.73)	0.54	0.67
<2-y-old child death	1,695	20	11.8	1,713	12	7.0	0.59	(0.26–1.19)	0.51	(0.22–1.07)	0.10	0.16

Abbreviations: HH, household; I: incidence; CIR, cumulative incidence ratio; CI, confidence interval.

^a Households with at least one reported case (per 1,000 households) since implementation of continuous supply.

^b CIs obtained by bootstrapping within strata of wards.

^c Adjusted for household socioeconomic status, religion, handwashing infrastructure, latrine ownership, sewerage, and garbage disposal; we only included covariates in the adjusted models that could not plausibly be impacted by the continuous supply intervention.

^d p-value from Wilcoxon rank-sum permutation test; the permutation test is conservative relative to the CIs around the CIR because it tests the null hypothesis that the two groups have the same distribution as opposed to the null hypothesis of no effect on average.

^e Adjusted CIR not calculated because of sparse data.