CT angiography (CTA) and exercise electrocardiography (XECG) agreement (n = 452)
| XECG not performed (n = 178) | Negative agreement (n = 138) | Disagreement (n = 89) | Positive agreement (n = 47) | p Value* | |
| Gender (female) | 91 (0.51) | 79 (0.57) | 40 (0.45) | 7 (0.15) | <0.001 |
| Age (years), mean (SD) | 57 (10) | 52 (9) | 56 (10) | 59 (9) | <0.001 |
| Heart rate (min−1), mean (SD) | 68 (12) | 70 (13) | 68 (10) | 64 (12) | 0.02 |
| Pre-test probability (%), mean (SD) | 57 (27) | 45 (25) | 52 (28) | 68 (32) | <0.001 |
| Risk profile | |||||
| Nicotine abuse | 59 (0.33) | 40 (0.29) | 23 (0.26) | 14 (0.30) | 0.65 |
| Hypertension | 98 (0.55) | 52 (0.38) | 43 (0.48) | 27 (0.57) | 0.01 |
| Dyslipidaemia | 102 (0.57) | 78 (0.57) | 55 (0.62) | 36 (0.77) | 0.08 |
| Diabetes | 27 (0.15) | 12 (0.09) | 16 (0.18) | 8 (0.17) | 0.18 |
| Family history of CVD | 72 (0.40) | 75 (0.54) | 39 (0.44) | 20 (0.43) | 0.09 |
| History of vascular disease | 20 (0.11) | 4 (0.03) | 3 (0.03) | 5 (0.11) | 0.01 |
| Chest pain symptoms | 0.003 | ||||
| Typical | 60 (0.34) | 26 (0.19) | 28 (0.31) | 27 (0.57) | |
| Atypical | 97 (0.54) | 90 (0.65) | 43 (0.48) | 12 (0.26) | |
| Non-anginal | 21 (0.12) | 22 (0.16) | 18 (0.20) | 8 (0.17) | |
| CT angiography | |||||
| >50% Stenosis, any vessel | 48 (0.27) | 0 | 45 (0.51) | 47 (1.0) | <0.001 |
| Single-vessel disease | 19 (0.11) | 0 | 26 (0.29) | 16 (0.34) | <0.001 |
| Two-vessel disease | 16 (0.09) | 0 | 10 (0.11) | 13 (0.28) | <0.001 |
| Three-vessel disease | 13 (0.07) | 0 | 9 (0.10) | 18 (0.38) | <0.001 |
| Catheter angiography | 38 (0.21) | 6 (0.04) | 27 (0.30) | 25 (0.53) | <0.001 |
| >50% Stenosis, any vessel | 22 (0.12) | 0 | 11 (0.12) | 22 (0.47) | |
| Single-vessel disease | 8 (0.04) | 0 | 7 (0.08) | 8 (0.17) | |
| Two-vessel disease | 9 (0.05) | 0 | 3 (0.03) | 8 (0.17) | |
| Three-vessel disease | 5 (0.03) | 0 | 1 (0.01) | 6 (0.13) | <0.001 |
| Revascularisation | 25 (0.14) | 0 | 11 (0.12) | 22 (0.47) | <0.001 |
| Bypass graft surgery | 5 (0.03) | 0 | 1 (0.01) | 7 (0.15) | 0.05 |
| Percutaneous intervention | 20 (0.11) | 0 | 10 (0.11) | 15 (0.32) | 0.03 |
Results are shown as number (proportion of the total) unless stated otherwise.
*Analysis of variance test. Excluding 19 patients with unavailable CT angiography results.
CVD, cardiovascular disease.