Fig 1. Multivariate predictors of outcome in patients with complete recanalization and in patients with incomplete recanalization. The model R² represents the sum of the incremental R² values of each selection variable added to the model in stepwise fashion. Of note, the presence of leptomeningeal collaterals had an inverse correlation with mRS, though the reported R² is positive by definition. In addition, whereas both models remained strongly significant after step 3, variables added in step 3 of each model did not significantly increase the overall predictive capacity (R²) of each model beyond that provided for by the initial 2 variables.