APPENDIX 1.
Sensitivity, Specificity, Positive Predictive Value (PPV), and Negative Predictive Value (NPV) to Detect Nondiseased Stents, < 50% stenosis, ≥ 50% In-Stent Restenosis, and Totally Occluded Stents by Qualitative MDCT Angiography
| Performance Measure | No Diseasea | < 50% Stenosisb | ≥ 50% Stenosisc | 100% Stenosisd |
|---|---|---|---|---|
| Prevalence (%) | 4 | 71 | 21 | 4 |
| Sensitivity (%) | 0 (0–84) | 88 (73–97) | 20 (3–56) | 50 (1–99) |
| Specificity (%) | 98 (89–100) | 29 (8–58) | 90 (75–97) | 100 (92–100) |
| PPV (%) | 0 (0–98) | 75 (59–87) | 33 (4–78) | 100 (3–100) |
| NPV (%) | 96 (86–100) | 50 (16–84) | 81 (66–91) | 98 (89–100) |
Note—Data in parentheses are 95% CIs.
a
Quantitative coronary angiography values of 0–9% diameter stenosis.
b
Quantitative coronary angiography values of 10–49% diameter stenosis.
c
Quantitative coronary angiography values of 50–99% diameter stenosis.
d
Quantitative conventional coronary angiography value of 100% diameter stenosis.