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Table 3 Diagnostic accuracy of Rb-PET-MPI and Tc-SPECT-MPI diagnostic strategies in each subgroup (results in comparison with the reference examination)

From: Cost-effectiveness of 82-Rubidium PET myocardial perfusion imaging for the diagnosis of myocardial ischemia depending on the prevalence of coronary artery disease

Strategy

Number of test results

DA

TP

FN

TN

FP

DA [95% CI]

Low PTP (< 5%)

N = 46

 Rb-PET-MPI

0

0

44

2

0.96 [0.90–0.99]

 Tc-SPECT-MPI

0

0

46

0

1

p value

0.16

Intermediate PTP (5–15%)

N = 132

 Rb-PET-MPI

12

3

108

9

0.91 [0.86–0.96]

 Tc-SPECT-MPI

9

6

113

4

0.92 [0.87–0.97]

p value

0.64

High PTP (> 15%)

N = 130

 Rb-PET-MPI

19

6

94

11

0.87 [0.81–0.93]

 Tc-SPECT-MPI

12

13

90

15

0.78 [0.71–0.85]

p value

0.048

  1. DA diagnostic accuracy, TP true positive, FN false negative, TN true negative, FP false positive