Table 3. Multivariate logistic regression to ascertain variables associated with “cure” (i.e. to become egg-negative after treatment) in 282 children (5 months–7 year olds).

Variable	Baseline category	Test category	OR (CI95)	P-value
Age	1–3 year olds	4–7 year olds	3.53	<0.001
			(1.75–7.12)
Sex	Boy	Girl	0.70	0.22
			(0.40–1.23)
Dosage of praziquantel received at baseline	34.6 mg/Kg*	+1 mg/Kg	0.96	0.49
			(0.85–1.08)
No. treatment rounds in the past 18 months	Never been treated	One round	0.35	0.003
			(0.17–0.71)
		Two rounds	0.06	<0.00001
			(0.03–0.15)
		Three or more rounds	0.08	<0.00001
			(0.04–0.20)
Daily time in water	0 hours	+1 category	0.85	0.24
			(0.65–1.11)
Was infection at baseline >399 epg (heavy)?	No	Yes	0.47	0.028
			(0.24–0.92)

Time in water categories: 0 = zero hours, 1 = <30 min, 2 = 30–60 min, 3 = 60–120 min, 4 = >120 min.

^*34.6 mg/Kg was the minimum dosage given in our survey population, while the maximum dosage was 45.1 mg/Kg.