TABLE 1.

Characteristics of the study population^a

Characteristic	Value for group				Differences between groupsb
	Uninfected	P. vivax infected	STH infected	Coinfected
No. of participants	31	33	39	27
No. female	16	18	13	8	No sig. diffs. by two-proportion z-test
No. indigenous	0	11	0	7	Hospital-collected populations similar (two-proportion z-test)
Age (yr)	9.1 ± 2.9	12.8 ± 3.2	10.6 ± 2.2	12.0 ± 2.98	Differences by ANOVA; sig. diffs. between all pairs except P. vivax and coinfection
P. vivax parasitemia (no. of parasites/μl)	0	2,554 ± 2,346	0	3,901 ± 2,660	Differences by ANOVA (P = 0.04) between P. vivax and coinfection
No. infected with T. trichiura	0	0	36	25	No sig. diffs. by two-proportion z-test
T. trichiura egg count/g	N/A	N/A	38 ± 44	50 ± 88	No sig. diffs. by Mann-Whitney test
No. infected with A. lumbricoides	0	0	11	4	No sig. diffs. by two-proportion z-test
A. lumbricoides egg count/g	N/A	N/A	2,115 ± 3,825	347 ± 659	No sig. diffs. by Mann-Whitney test
No. infected with hookworm	0	0	3	11	Sig. diff. by two-proportion z-test (P = 0.001)
Hookworm egg count/g	N/A	N/A	295 ± 502	37 ± 65	No sig. diffs. by Mann-Whitney test
Location of collection	School	Hospital	School	Hospital

^aThe study population included four groups of children: those infected with P. vivax only, those infected with STH only, those infected with both P. vivax and STH, and those not infected with either P. vivax or STH. Children infected with P. vivax (with or without STH infection) were enrolled in the hospital before receiving treatment. Children who were not infected with P. vivax (with or without STH infection) were enrolled from a school within the hospital’s catchment area.

^bsig. diffs., significant differences.