Table 3.

Diarrhea episodes, individuals, person-weeks of observation, and diarrheal rates in intervention and control households, by age group

Age group (years)	Individuals in intervention households (N = 1,610)				Individuals in control households (N = 1,630)
	Number of  diarrheal episodes*	Number of individuals	PWO†	Diarrheal rate	Number of diarrheal episodes	Number of individuals	PWO†	Diarrheal rate	P‡
< 1	43	69	862	5.0	21	47	587	3.6	0.37
1–2	83	85	1,063	7.8	88	105	1,313	6.7	0.58
3–4	59	127	1,588	3.7	47	116	1,450	3.2	0.62
≥ 5	261	1,329	16,612	1.6	248	1,362	17,025	1.5	0.39
Total	446	1,610	20,125	2.2	404	1,630	20,375	2.0	0.38

^*An episode is a week with at least one reported episode of diarrhea.

^†PWO = person-week of observation was calculated by multiplying the number of individuals followed by the number of weeks of surveillance (12.5 weeks).

^‡The mean individual-level diarrheal rates between intervention and control households were compared using the 2 sample t test, where Taylor series linearization method was used to estimate the variance to account for household-level clustering.