Threshold | Positive Predictive Value (%) | Prognostic Yield (%) |
---|---|---|
Poor outcome | ||
DWI > 70 mL | 86.4a | 17.9 |
NIHSS score > 20 | 100.0a | 11.4 |
Good outcome | ||
MTT < 0 mL | 89.5a | 30.9 |
Tmax < 50 mL | 88.9a | 29.3 |
NIHSS score < 8 | 92.3a | 31.7 |
Combined clinical thresholds (NIHSS score) | 94.3a | 43.1 |
Combined imaging thresholds (DWI + MTT) | 88.3a | 48.8 |
Combined imaging thresholds (DWI + Tmax > 6 seconds) | 87.9a | 47.2 |
Combined clinical and imaging thresholds | 88.8a | 65.0b |