Diagnosis | Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | NPV (95% CI) | Accuracy (95% CI) |
Segment-based | |||||
Diagnostic segments | 97 (94 to 99) | 98 (97 to 99) | 89 (84 to 92) | 99 (99 to 100) | 98 (97 to 99) |
All segments | 97 (94 to 99) | 97 (96 to 98) | 84 (80 to 88) | 99 (99 to 100) | 97 (96 to 98) |
Vessel-based | |||||
Diagnostic segments | 99 (96 to 100) | 98 (95 to 99) | 96 (92 to 99) | 100 (98 to 100) | 98 (96 to 99) |
All segments | 99 (96 to 100) | 96 (93 to 98) | 95 (90 to 98) | 100 (97 to 100) | 98 (95 to 99) |
Patient-based | |||||
Diagnostic segments | 100 (94 to 100) | 96 (94 to 100) | 97 (90 to 100) | 100 (93 to 100) | 98 (94 to 100) |
All segments | 100 (95 to 100) | 93 (82 to 98) | 94 (86 to 98) | 100 (93 to 100) | 97 (92 to 99) |
All analyses were performed separately, including only the segments with diagnostic image quality and also including all segments. For the latter, the non-diagnostic segments were rated as being positive for stenosis.
NPV, negative predictive value; PPV, positive predictive value.