Likelihood of clinical evolution to NAR as a function of the mediolateral diameter of the straight or falcine sinus at its shortest pointa
| Straight or Falcine Sinus Diameter (mm) | Probability of NAR | 95% CI |
|---|---|---|
| 0 | 4% | 1%–30% |
| 1 | 8% | 2%–38% |
| 2 | 14% | 3%–44% |
| 3 | 24% | 8%–52% |
| 4 | 38% | 18%–60% |
| 5 | 53% | 33%–72% |
| 6 | 68% | 49%–83% |
| 7 | 80% | 60%–92% |
| 8 | 88% | 69%–96% |
| 9 | 93% | 75%–98% |
| 10 | 96% | 80%–99% |
| 11 | 98% | 84%–99% |
| 12 | 99% | 87%–99% |
| 13 | 100% | 90%–100% |
↵a Probabilities determined by logistic regression, where straight or falcine sinus diameter on MR imaging was identified as a multivariable predictor of clinical outcome (AUC = 0.89, P < .001).