Other baseline characteristics of the study population
| Variables | |
| Age /years mean±SD | 64±14 |
| Men, n (%) | 714 (51.6%) |
| Race/ethnic background | |
| White | 605 (43.7%) |
| Black | 104 (7.5%) |
| Others | 675 (48.8) |
| Diabetes, n (%) | 251 (18.1%) |
| Hypertension, n (%) | 740 (53.5%) |
| Dyslipidaemia, n (%) | 640 (46.2%) |
| Smoking, n (%) | 236 (17.1%) |
| Family history of coronary artery disease, n (%) | 370 (26.7%) |
| previous history of coronary artery disease, n (%) | 184 (13.3%) |
| HEART score=0 HEART score=1 HEART score=2 HEART score=3 | 102 (6.9%) 476 (35%) 520 (37.6%) 286 (20.5%) |
| Stress test imaging, n (%) | |
| Stress echocardiography | 988 (72%) |
| SPECT | 411 (29.7%) |
| Stressing methods, n (%) | |
| Dipyridamole | 731 (52.8%) |
| Treadmill | 617 (44.6%) |
| Dobutamine | 36 (2.6%) |
| ECG changes during stress, n (%) | 95 (6.9%) |
| Hypertensive response to stress test, n (%) | 110 (7.9%) |