Table 1. Characteristics of the study cohort at screening (December 2013- December 2014).

	Total		Cahuide		Lupuna
	n	%	n	%	n	%	P-value
Individuals	1935	-	1062	-	873	-	NA
Age, mean (95% CI)	27.8 (4, 67)		26.0 (4, 65)		30.2 (5, 70)		<0.001
Age
≤5y	202	10.4	123	11.6	79	9.0	<0.001
>5y - 10y	286	14.8	167	15.7	119	13.6
>10y - 15y	250	12.9	161	15.2	89	10.2
>15y - 25y	311	16.1	153	14.4	158	18.1
>25y	886	45.8	458	43.1	428	49.0
Male/female ratio	1.1	-	1.1	-	1.0	-	0.555
Work status
Employed	658	34.0	348	32.8	310	35.5
Students or children	854	44.1	497	46.8	357	40.9
Other (including housework)	423	21.9	217	20.4	206	23.6	0.034
Households	442	-	241	-	201	-	NA
House wall materials							<0.001
Brick, cement	39	8.8	10	4.2	29	14.4
Wood	344	77.8	200	83.0	144	71.6
Palm	38	8.6	16	6.6	22	11.0
Other	21	4.8	15	6.2	6	3.0
Had malaria previous year	599	31.3	474	44.8	125	14.6	<0.001
Number of visitsa	7265	-	4091	-	3174	-	NA
Visits with symptomsa,b	762	13.3	284	9.5	478	17.3	<0.001
Clinical malaria casesa,c
P. vivax	56	1.0	17	0.6	39	1.4	0.734
P. falciparum	2	0.03	0	0	2	0.1	-

^atotal for 5 surveys

^bfever, headache and/or chills (among those with full clinical data available at the time of visit and during the previous 7 days)

^cby light microscopy at screening. NA, not applicable; CI, confidence interval.