Table 3.
Results of logistic regression analysis: independent predictors of favorable functional outcome.
| Predictor | Univariable model | Multivariable model | ||
|---|---|---|---|---|
| Odds ratio | P Value | Odds ratio | P value | |
| Age, per 10-year increase | 0.51 (0.37, 0.71) | < 0.001 | 0.42 (0.34, 0.77) | < 0.001 |
| Baseline NIHSS score | 0.84 (0.78, 0.89) | < 0.001 | 0.90 (0.82, 0.98) | 0.02 |
| Baseline DWI lesion volume | 0.79 (0.71, 0.88) | < 0.001 | 0.83 (0.73, 0.96) | 0.01 |
| Collateral grade | ||||
| 0 (Very poor) | Reference | Reference | ||
| 1 (Poor) | 0.68 (0.30, 1.57) | 0.37 | 1.21 (0.38, 3.83) | 0.75 |
| 2 (Intermediate) | 11.05 (2.42, 50.37) | 0.002 | 9.49 (1.36, 66.38) | 0.02 |
| 3 (Good) | 3.68 (1.11, 12.19) | 0.03 | 6.22 (1.16, 33.24) | 0.03 |
| P for trend† | < 0.001 | 0.008 | ||
| Successful reperfusion‡ | 2.58 (1.32, 5.04) | 0.01 | 5.84 (2.08, 16.42) | 0.001 |
The data in parentheses are the 95% confidence intervals.
A favorable functional outcome was defined as a modified Rankin scale (mRS) score of less than or equal to 2, and an unfavorable functional outcome was defined as a mRS score of greater than 2 at day 90.
DWI diffusion-weighted imaging, NIHSS National Institutes of Health Stroke scale.
†P values for the linearity of the relationship between the collateral grades and functional outcomes.
‡Successful reperfusion was defined as a mTICI score of 2b to 3 after intraarterial thrombectomy.