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Table 5: 
Performance of the calcium volume test determining a stenosis ≥70%a
Calcium Volume Threshold = 0.09 mL
SymptomaticAsymptomaticAll
Sensitivity41% (25%–59%)29% (12%–55%)37% (24%–52%)
Specificity53% (37%–67%)72% (61%–81%)65% (56%–73%)
PPV37% (22%–54%)15% (6%–34%)27% (17%–40%)
NPV57% (41%–71%)85% (74%–92%)7%5 (66%–82%)
  • a All values of a calcium volume threshold of 0.03 are worse and, therefore, are not presented here.