Radiographic factor combinations that predict a diagnosis of tortuosity
| Radiographic Factor Combination | Concordance Statistic | Sensitivity | Specificity |
|---|---|---|---|
| Factors 5 & 6 | .903 | 89 (CI .79–1) | 93 (CI .86–1) |
| Factors 3, 5, & 6 | .911 | 85 (CI .66–1) | 93 (CI .86–1) |
| Factors 3 & 6 | .898 | 85 (CI .66–1) | 91 (CI .83–.98) |
| Factor 5 | .826 | 93 (CI .83–1) | 80 (CI .64–.94) |
| Factor 6 | .832 | 93 (CI .83–1) | 76 (CI .58–.91) |
| Factor 3 | .780 | 89 (CI .71–1) | 69 (CI .46–.86) |
Note:—CI indicates 95% confidence interval.