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Table 6: Likelihood of clinical evolution to NAR as a function of the mediolateral diameter of the straight or falcine sinus at its shortest point^{^a}
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).

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%