Univariate and multivariate Cox regression analysis results for the impact of demographics, social, and medical co-morbidities on recovery from clinical West Nile virus (WNV) infection (encephalitis, meningitis, and uncomplicated fever).

*Variables with p≤0.25 were entered into the multivariate model. A backward-stepwise approach was used to determine independent variables considered significant (α = 0.10).
**Chronic alcohol use was defined as having a history of more than 15 drinks containing alcohol per week.
***NS = Not significant.