Table 4. Impact of ivermectin treatment on STH infections in 1,701 pre-school children.

	No-Treatment	Ivermectin	Univariate analysis		Multivariate analysis
	n = 925	n = 776	Odds ratio	p	Odds ratio*	p
			(95% CI)		(95% CI)
STH infections
Any helminth,
Negative	326 (35.2)	460 (59.3)	1.0		1.0
Positive	599 (64.8)	316 (40.7)	0.33 (0.22–0.50)	<0.001	0.34 (0.21–0.56)	<0.001
A. lumbricoides
Negative	570 (61.6)	519 (66.9)	1.0		1.0
Positive	355 (38.4)	257 (33.1)	0.64 (0.38–1.09)	0.102	0.67 (0.38–1.19)	0.174
T. trichiura
Negative	413 (44.6)	654 (84.3)	1.0		1.0
Positive	512 (55.4)	122 (15.7)	0.12 (0.08–0.20)	<0.001	0.12 (0.07–0.21)	<0.001
Hookworm
Negative	920 (99.5)	768 (99.0)	–	…	…	…
Positive	5 (0.5)	8 (1.0)	**		**
S. stercoralis
Negative	904 (97.7)	775 (99.9)	…	…	….	…
Positive	21 (2.3)	1 (0.1)	**		**

*: Odds ratio adjusted by age, sex and ivermectin treatment.

**: Cannot be reliably estimated because of small numbers.