Table 2. Generalized linear model (logit link function) of human seropositivity for T. cruzi infection for the total population (model 1) and children (model 2), Pampa del Indio, Argentina.

Model 1: population model				Model 2: children
Variable	RI	POR (CI95)	P	Variable	RI	POR (CI95)	P
Age (years)	1	1.07 (1.06–1.08)	<0.001**	Age (years)	1	1.1 (1.04–1.3)	0.008*
Infected vector abundance (1)	1	1.6 (1.2–2.3)	0.003*	Infected vector abundance (1)	1	2.2 (1.001–4.8)	0.04*
Social vulnerability (2)	1	1.5 (1.2–1.8)	<0.001**	Social vulnerability (2)	0.9	1.3 (0.8–2.1)	0.2
Interaction (1) * (2)	1	0.7 (0.6–0.9)	0.01*	Interaction (1) * (2)	0.9	0.5 (0.2–0.98)	0.04*
Host availability	1	0.7 (0.6–0.9)	0.003*	Host availability	0.9	0.5 (0.2–0.9)	0.02*
Number of seropositive co-inhabitants	1	1.4 (1.3–1.6)	<0.001**	Seropositive mother	0.9
Ethnic group	0.9			No		1
Creole		1		Yes		3.8 (1.4–11)	0.009*
Qom		2.3 (1.1–4.6)	0.02*	Gender	0.7
Gender	0.4			Male		1
Male		1		Female		2 (0.96–4.1)	0.06~
Female		0.8 (0.6–1.1)	0.2	Number of seropositive co-inhabitants	0.6	1.3 (0.96–1.9)	0.08~
				Recent insecticide spraying (2006–2008)	0.5
				No		1
				Yes		0.5 (0.2–1.3)	0.2
				Ethnic group	0.3
				Creole		1
				Qom		1.4 (0.2–12.5)	0.7

** p < 0.001;

* 0.001 ≤ p ≤ 0.05;

^~ 0.5 < p <1

POR: Prevalence odds ratio; RI: relative importance of the variable; CI₉₅: 95% confidence interval