Table 5.
(a) Diagnostic accuracy of pre-TAVI CT vs invasive coronary angiography using a cutoff value >50% of coronary artery stenoses (b) diagnostic accuracy of pre-TAVI CT vs invasive coronary angiography using a cutoff value >50% of coronary artery stenoses (including all vessels)
| (a) Segment-based analysis (excluding not evaluable segments) | |||||||||
| No. of segments | No of TN findings | No of TP findings | No of FN findings | No of FP findings | Sensitivity | Specificity | NPV | PPV | Accuracy |
| 1644 | 1194 | 315 | 9 | 126 | 97 (96–98) |
90 (87–92) |
99 (98–99) |
71 (67–75) | 91 (86–93) |
| Segment-based analysis (with not-evaluable segments censored as positive findings) | |||||||||
| No. of vessels | No of TN findings | No of TP findings | No of FN findings | No of FP findings | Sensitivity | Specificity | NPV | PPV | Accuracy |
| 1725 | 1194 | 327 | 9 | 195 | 97 (96–98) |
85 (84–87) |
99 (98–99) |
62 (58–66) | 88 (86–89) |
| (b) Vessel-based analysis | |||||||||
| No. of vessels | No of TN findings | No of TP findings | No of FN findings | No of FP findings | Sensitivity | Specificity | NPV | PPV | Accuracy |
| 345 | 242 | 68 | 3 | 32 | 95 (93–98) |
88 (84–92) |
98 (97–100) |
68 (58–77) | 89 (86–92) |
| Patient-based analysis | |||||||||
| No. of patients | No of TN findings | No of TP findings | No of FN findings | No of FP findings | Sensitivity | Specificity | NPV | PPV | Accuracy |
| 115 | 80 | 22 | 1 | 12 | 95 (91–97) |
86 (80–93) |
98 (96–100) |
64 (48–80) | 88 (82–94) |
FN, false-negative; FP, false-positive; NPV, negative predictive value; PPV, positive predictive value; TN, true-negative; TP, true-positive.
In parentheses data are 95% confidence interval.