Multivariate Model of Four-Year Ischemic Stroke Risk among 1,483 Elderly Patients with Anterior Myocardial Infarction.

Candidate variables were included in the initial Cox regression model if they were associated with stroke in a univariate analysis (P<0.25) listed in Table 3. Backward variable elimination, with an elimination criterion of a P value of more than 0.05, was then used to create a parsimonious model for predicting ischemic stroke.