Table 2.

Results of the final multilevel logistic regression model including variables putatively associated with HAV antibodies

Variable	Odds ratio	(95% CI)	P
Age (in years, continuous variable)	1.097	(1.050-1.147)	<0.0001
Sex (male vs. female)	0.594	(0.381-0.929)	0.022
Crowding (number of inhabitants/room)	1.603	(1.054-2.440)	0.028

Ramal do Granada, Brazil, 2004.

95% CI, 95% confidence interval.