Figure 2From: Incidence rates of tuberculosis in chronic hepatitis C infected patients with or without interferon based therapy: a population-based cohort study in Taiwan 1 minus Kaplan Meier to approximate cumulative incidence of tuberculosis among the IBT cohort (treated) and the untreated cohort (untreated) during 1-year follow-up (log rank test: 1.26, P  = 0.261). Back to article page