Predictive values for cerebrovascular reserve capacity higher than 10% at different cutoff values of diameter of STA at 1 year after ECIC bypass surgery
| STA Diameter (mm) | Sensitivity (%) | Specificity (%) | Positive Likelihood Ratio | Positive Predictive Value | Negative Predictive Value |
|---|---|---|---|---|---|
| 0.8 | 100 | 12.5 | 1.14 | 84.1 | 100 |
| 1.0 | 100 | 12.5 | 1.14 | 84.1 | 100 |
| 1.2 | 97.3 | 25.0 | 1.30 | 85.7 | 66.7 |
| 1.4 | 89.2 | 37.5 | 1.43 | 86.8 | 42.9 |
| 1.6 | 78.4 | 62.5 | 2.09 | 90.6 | 38.5 |
| 1.8 | 75.7 | 87.5 | 6.06 | 96.6 | 43.8 |
| 2.0 | 56.8 | 87.5 | 4.54 | 95.5 | 30.4 |
| 2.2 | 50.0 | 100 | 100 | 28.6 | |
| 2.4 | 29.7 | 100 | 100 | 23.5 | |
| 2.6 | 18.9 | 100 | 100 | 21.1 | |
| 2.8 | 8.1 | 100 | 100 | 19.5 |
Note:—ECIC indicates extracranial-intracranial bypass graft.