Table 4:
Cutoff values for grade of neurovascular conflict, CSA, and DOF to obtain the highest sum of sensitivity and specificity in predicting complete relief of pain after MVD (type 1 outcome), complete relief of pain with or without need for analgesic medication (type 1 or 2 outcome), or in predicting the side of symptoms in patients with TN
| Outcome | Cutoff | Contrast | Sensitivity | Specificity |
|---|---|---|---|---|
| Type 1 | ||||
| Grade | ≥2 | − | 59.6 | 90.7 |
| ≥2 | + | 67.3 | 90.7 | |
| CSA | ≤5.1 | − | 63.5 | 67.6 |
| ≤4.15 | + | 55.8 | 79.9 | |
| DOF | ≥2.0 | − | 69.2 | 73.4 |
| ≥2.5 | + | 59.6 | 87.1 | |
| Type 2 | ||||
| Grade | ≥2 | − | 52.4 | 91.4 |
| ≥2 | + | 58.7 | 91.4 | |
| CSA | ≤4.7 | − | 57.1 | 72.7 |
| ≤4.15 | + | 54 | 82 | |
| DOF | ≥2.0 | − | 63.5 | 74.3 |
| ≥2.5 | + | 54 | 88.3 | |
| Predicting side of sym in patients with TN | ||||
| Grade | ≥2 | − | 46.9 | 94.6 |
| ≥2 | + | 51.9 | 94.6 | |
| CSA | ≤4.7 | − | 55.6 | 75.7 |
| ≤4.15 | + | 50.6 | 85.6 | |
| DOF | ≥2.2 | − | 53.1 | 84.7 |
| ≥2.5 | + | 49.4 | 91 |
Note:—sym indicates symptoms; −, absent; +, present.