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Figure 4 (Top left) Unadjusted 0- to 12-year Kaplan-Meier (K-M) survival in unmatched Medicaid (triangles, thick line) versus non-Medicaid (thin line) coronary artery bypass graft (CABG) patients. (Top middle) Propensity-adjusted comparison of survival in Medicaid (thick line) versus non-Medicaid (thin line) CABG patients with additional Medicare coverage. (Top right) Propensity-adjusted comparison of survival in Medicaid (thick line) versus non-Medicaid (thin line) CABG non-Medicare patients. (Bottom left) Unadjusted 0- to 12-year Kaplan-Meier survival in one-to-one propensity-matched Medicaid (thick line) versus non-Medicaid (thin line) CABG patients: Medicare (black), non-Medicare (gray). (Bottom Right) Ten-year relative death hazard functions (Medicaid yes/no) for all patients (black, thin), Medicare cohort (black, thick), and non-Medicare cohort (gray) derived from analyses of propensity-matched survival data. CI = confidence interval.
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