Table 3

Results of the Per-Vessel Analysis

AllSingle-Source CTDual-Source CTp Values
No HRCHRCp ValueNo HRCHRCp ValueSingle- vs. Dual-Source CT Without HRCSingle- vs. Dual-Source CT With HRCSingle-Source With vs. Dual-Source CT Without HRC
n800180220212188
Evaluable738/800149/180200/2200.02208/212181/188NS<0.0010.0020.048
(92%)(82%)(91%)(98%)(96%)
(90%–94%)(77%–88%)(86%–94%)(95%–99%)(93%–98%)
Sensitivity101/11517/2524/27NS33/3427/29NS0.007NSNS
(88%)(68%)(89%)(97%)(93%)
(81%–93%)(48%–83%)(72%–96%)(85%–100%)(78%–98%)
Specificity599/623121/124164/173NS169/174145/152NSNSNSNS
(96%)(98%)(95%)(97%)(95%)
(94%–97%)(93%–99%)(90%–97%)(94%–99%)(91%–98%)
Positive predictive101/12517/2024/33NS33/3827/34NSNSNSNS
 value(81%)(85%)(73%)(87%)(79%)
(73%–86%)(64%–95%)(56%–85%)(73%–94%)(63%–90%)
Negative predictive599/613121/129164/167NS169/170145/147NS0.01NSNS
 value(98%)(94%)(98%)(99%)(99%)
(96%–99%)(88%–97%)(95%–99%)(97%–100%)(95%–100%)
Correctly700/800138/180188/2200.03202/212172/188NS<0.001NS0.001
 classified(88%)(77%)(86%)(95%)(92%)
(85%–90%)(70%–82%)(80%–90%)(92%–97%)(87%–95%)

CT = computed tomography; HRC = heart rate control.

  • In evaluable vessels.

  • Correctly classified: the proportion of vessels that were classified as “evaluable” and correctly determined as to the absence or presence of at least 1 stenosis in a coronary segment assigned to that artery. For each value, the actual numbers, percentage, and 95% confidence interval are provided.