Table 1. Characteristics of ARI Study Population.

	Target Population		Study Population			Population Not Selected		P value(Fishers exact test)
	N	Percent	N	Percent	N		Percent
Diagnosis of ARI
URTI	9948	80.9	1479	68.4	8469		83.6	<0.0005
LRTI	2347	19.1	684	31.6	1663		16.4
sex
female	5919	48.2	1069	49.4	4850		47.9	0.195
male	6372	51.8	1094	50.6	5278		52.1
Diagnosis of malaria
no malaria	7682	62.5	1739	80.4	5943		58.7	<0.0005
malaria	4613∧	37.5	424*	19.6	4189		41.3
Age class of cases
<6 m	2505	20.4	490	22.6	2015		19.9	<0.0005$
6–11 m	2079	16.9	469	21.7	1610		15.9
12–23 m	2903	23.6	549	25.4	2354		23.2
24–35 m	2037	16.6	321	14.9	1716		16.9
36–59 m	2771	22.5	334	15.4	2437		24.1
Infant
>365days	7711	62.7	1204	55.7	6507		64.2	<0.0005
< = 365days	4584	37.3	959	44.3	3625		35.8

Notes.

^*Diagnosis of malaria based on slide positivity.

^∧Clinical diagnosis of malaria.

^$Pearsons chi squared test comparing age in 5 strata.