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The collinearity analysis between the variables.
| TOL | VIF | |
| Age | 0.954 | 1.048 |
| BMI | 0.987 | 1.014 |
| Baseline NIHSS | 0.725 | 1.380 |
| Pc-ASPECT | 0.398 | 2.515 |
| DSA-ASITN grading | 0.783 | 1.278 |
| NIHSS at 24 h | 0.368 | 2.714 |
ASPECT = Alberta Stroke Program Early CT, BMI = body mass index, DSA-ASITN = digital subtraction angiography-American Society of Intervention and Therapeutic Neuroradiology, NIHSS = National Institute of Health stroke scale, TOL = tolerance, VIF = variance inflation factor.
