Table 1.
Patient characteristics
| Characteristics | Site 1 | Site 2 | Site 3 | P value | GIM | Cardiology | P value |
|---|---|---|---|---|---|---|---|
| Patients (n) | 142 | 248 | 163 | 277 | 276 | ||
| Age (SD) | *69.5 (18.2) | *65.3 (15.2) | 68.4 (16.3) | *< 0.03 | 68.6 (16.6) | 66.1 (16.2) | 0.08 |
| Male (%) | 49 | 56 | 54 | 0.44 | 54 | 56 | 0.37 |
| HTN (%) | 60 | 67 | 77 | 0.01 | 68 | 68 | 0.92 |
| Smoker (%) | 21 | 27 | 33 | 0.06 | 32.5 | 22.5 | 0.01 |
| Hyperlipidaemia (%) | 39 | 54 | 52 | 0.02 | 39.4 | 59.8 | <0.01 |
| Chronic kidney disease (%) | 11 | 12 | 18 | 0.12 | 13.7 | 13.8 | 0.92 |
| Diabetes (%) | 27 | 30 | 37 | 0.14 | 28.2 | 34.1 | 0.16 |
| Angina (%) | 4 | 18 | 15 | 0.01 | 7.3 | 19.6 | <0.01 |
| Prior ACS (%) | 14 | 23 | 23 | 0.09 | 15.9 | 25 | 0.01 |
| Prior PCI (%) | 8 | 25 | 16 | <0.01 | 9.7 | 26.8 | <0.01 |
| Prior CABG (%) | 6 | 11 | 10 | 0.27 | 6.9 | 12.7 | 0.03 |
| Congestive Heart Failure (%) | 22 | 14 | 23 | 0.04 | 19.5 | 18.1 | 0.76 |
| Valvular heart disease (%) | 8 | 18 | 10 | 0.01 | 9.7 | 16.3 | 0.0303 |
| Prior TTE (%) | 48 | 57 | 56 | 0.17 | 45 | 64 | <0.01 |
| Prior TEE (%) | 1 | 8 | 3 | 0.01 | 2 | 7 | 0.01 |
| Prior SPECT (%) | 6 | 23 | 30 | <0.01 | 16 | 26 | <0.001 |
| Prior angiogram (%) | 20 | 46 | 33 | <0.01 | 18 | 53 | <0.01 |
Patient demographics and clinical information from each study population. P values for differences between sites and between GIM and Cardiology are shown. HTN Hypertension, PCI Percutaneous Coronary Intervention, ACS acute coronary syndrome, CABG coronary artery by-pass graft, TTE transthoracic echocardiography, TEE transesophageal echocardiography, SPECT single-photon emission tomography myocardial perfusion imaging. *p value relates to the difference between the average age of patient from site 1 and site 2