Adjusted associations between dual Medicare-Medicaid-eligible status and outcomes after ischemic stroke.

Mixed models with a logit link function were used to calculate odds ratios for the relationship between dual-eligible status and in-hospital, 30-day, and 1-year all-cause mortality. Cox proportional hazards models that censored for change in Medicare enrollment and accounted for death as a competing event were used to calculate hazard ratios for 30-day and 1-year all-cause readmission. All models were adjusted for patient demographics (age, sex, and race-ethnicity) and clinical characteristics (congestive heart failure, prior myocardial infarction, unstable angina, chronic atherosclerosis, hypertension, diabetes, peripheral vascular disease, prior stroke, cerebrovascular disease, renal failure, chronic obstructive pulmonary disease, pneumonia, respiratory failure, cancer, protein-calorie malnutrition, functional disability, dementia, depression, other psychiatric disorder, trauma in past year, and chronic liver disease). CI, confidence interval; HR, hazard ratio; OR, odds ratio.