Statistical analysis
| Grades of Neurovascular Conflict | Contrast Enhancement | P Values | Contrast vs Noncontrast | Sensitivity | Specificity | |||
|---|---|---|---|---|---|---|---|---|
| Sym vs Asym | Sym vs Cntrl | Asym vs Cntrl | Sym | Asym | ||||
| 0 | Contrast− | .002 | .002 | .51 | 1 | 1 | 12.3% | 66.7% |
| Contrast+ | .002 | .003 | .51 | 12.3% | 66.7% | |||
| 1 | Contrast− | .03 | .09 | 1 | 0.63 | 1 | 40.7% | 40.5% |
| Contrast+ | .004 | .03 | 1 | 35.8% | 40.5% | |||
| 2 | Contrast− | <.001 | <.001 | .19 | 0.07 | 1 | 32.1% | 94.6% |
| Contrast+ | .06 | .01 | .19 | 18.5% | 94.6% | |||
| 3 | Contrast− | <.001 | .03 | 1 | 0.001 | 1 | 14.8% | 100.0% |
| Contrast+ | <.001 | <.001 | 1 | 33.3% | 100.0% | |||
| 1, 2, or 3 | Contrast− | .002 | .003 | .51 | 1 | 1 | 87.7% | 35.1% |
| Contrast+ | .002 | .002 | .51 | 87.7% | 35.1% | |||
| 2 and 3 | Contrast− | <.001 | <.001 | .19 | 0.64 | 1 | 46.9% | 94.6% |
| Contrast+ | <.001 | <.001 | .19 | 51.9% | 94.6% | |||
Note:—Sym indicates symptomatic; Asym, asymptomatic; Cntrl, control; Contrast +, contrast enhancement; Contrast −, no contrast enhancement.