Table 3:

Performance of the calcium volume test determining a stenosis degree of ≥40%a

Calcium Volume Threshold = 0.03 mLCalcium Volume Threshold = 0.09 mL
SymptomaticAsymptomaticAllSymptomaticAsymptomaticAll
Sensitivity63% (49%–74%)66% (50%–79%)64% (54%–73%)48% (36%–61%)45% (30%–60%)47% (37%–57%)
Specificity73% (43%–90%)48% (35%–61%)52% (40%–64%)73% (43%–90%)83% (71%–91%)82% (70%–89%)
PPV92% (79%–97%)47% (34%–60%)66% (56%–75%)90% (74%–97%)65% (46%–81%)79% (66%–87%)
NPV28% (15%–46%)67% (51%–79%)50% (38%–62%)22% (11%–37%)68% (56%–78%)51% (42%–61%)
  • a The test was performed for a calcium-volume threshold of 0.03 mL (left) and 0.09 mL The 95% confidence interval is given in parentheses.