Bivariate analyses of household-level sociodemographics and risk factors by case-control status.

<p>Abbreviations: aOR, adjusted odds ratio; CI, confidence interval; HIV, human immunodeficiency virus; IDU, intravenous drug use; MSM, men who have sex with men; STD, sexually transmitted disease.</p><p>a. Logistic regression was used to calculate adjusted OR’s and 95% CI’s, controlling for household size.