AIC analysis
| AIC | R2 | χ2(df) | P Value | |
|---|---|---|---|---|
| Null model | 150.2 | |||
| Fitted model with admission NIHSS | 136.4 | 10.7% | 15.8 | <.0001 |
| Fitted model with occlusion location | 144.7 | 5.1% | 7.5 | .0062 |
| Fitted model with both NIHSS and occlusion location (CMR) | 132.12 | 13.5% | 20.1 | <.0001 |
Note:—Performance of combining stratified NIHSS score and vessel occlusion location (CMR score) versus each alone. The null model was compared with a model fitted with admission NIHSS score, occlusion location, and the CMR score. To quantify the predictive effects of each parameter on CMR, the AIC and coefficient of determination R2 were calculated. A better model is evidenced by a lower AIC and a higher R2.