Table 5 Probability of coronary artery disease: reclassification table after addition of CTCS to the model published by Pryor et al. (model 2)
Probability category based on model 2 Probability category based on model 2 + CTCS Total, n (%)
<30% ≥30–50% ≥50–70% ≥70%
<30%
 N (%) 76 (85.4) 10 (11.2) 2 (2.3) 1 (1.1) 89 (35.0)
 Observed probability, % 9.2 40.0 100.0 100.0 15.7
≥30–50%
 N (%) 10 (27.0) 10 (27.0) 12 (32.4) 5 (13.5) 37 (14.6)
 Observed probability, % 10.0 20.0 50.0 100.0 37.8
≥50–70%
 N (%) 7 (13.5) 6 (11.5) 15 (28.9) 24 (46.2) 52 (20.5)
 Observed probability, % 0.0 50.0 73.3 66.7 57.7
≥70%
 N (%) 3 (4.0) 3 (4.0) 9 (11.8) 61 (80.3) 76 (29.9)
 Observed probability, % 33.3 0.0 66.7 95.0 85.5
 
Total
 N (%) 96 (37.8) 29 (11.4) 38 (15.0) 91 (35.8) 254 (100.0)
 Observed probability, % 9.4 31.0 65.8 87.9 48.4
CTCS computed tomography coronary calcium score