Performance of the calcium volume test determining a stenosis degree of ≥50%a
| Calcium Volume Threshold = 0.03 mL | Calcium Volume Threshold = 0.09 mL | |||||
|---|---|---|---|---|---|---|
| Symptomatic | Asymptomatic | All | Symptomatic | Asymptomatic | All | |
| Sensitivity | 65% (50%–77%) | 65% (47%–79%) | 65% (54%–74%) | 48% (34%–62%) | 45% (29%–62%) | 47% (36%–58%) |
| Specificity | 63% (41%–81%) | 46% (34%–58%) | 50% (39%–61%) | 63% (41%–81%) | 80% (69%–88%) | 76% (66%–84%) |
| PPV | 82% (67%–91%) | 38% (26%–51%) | 56% (46%–66%) | 77% (59%–88%) | 54% (35%–71%) | 66% (53%–77%) |
| NPV | 41% (26%–59%) | 72% (56%–83%) | 59% (47%–70%) | 32% (20%–49%) | 74% (63%–83%) | 59% (50%–68%) |
a The test has been performed for a calcium volume threshold of 0.03 mL (left) and 0.09 mL (right). The 95% confidence interval is given in parentheses.