Table 3:
Optimal threshold, sensitivity, specificity, overall accuracy, and ROC area imaging variables that were significant with univariate analysis
| Variable | Threshold | Specificity | Sensitivity | Overall Accuracy | ROC Area |
|---|---|---|---|---|---|
| Base infarct volume (mL) | 24.1 | 76.5% | 63.6% | 70.1% | 0.717 |
| Final infarct volume (mL) | 45 | 82.4% | 59.1% | 70.7% | 0.706 |
| Volume of ATD>6 s (mL) | 27.77 | 88.2% | 63.6% | 75.9% | 0.777 |
| Volume of ATD2–6 s (mL) | 38.28 | 82.4% | 81.8% | 82.1% | 0.906 |
| rCBF | 1 | 58.8% | 90.9% | 74.9% | 0.709 |
| rCBV2–6 s | 1.6 | 88.2% | 81.8% | 85.0% | 0.900 |
| PCIa | 61.70 | 88.2% | 100.0% | 94.1% | 0.973 |
a
PCI = Volume of ATD2–6 seconds × rCBV2–6 seconds.