Table 3.
Comparison of baseline clinical characteristics, exercise data and outcome in patients tested with exercise stress echocardiography and stress electrocardiography.
| Variable | All Patients (n = 862) |
SECHO a
(n = 321, 37.2%) |
Stress ECG b
(n = 541, 62.8%) |
p Value |
|---|---|---|---|---|
| Male gender | 364 (42.2%) | 137 (42.7%) | 227 (42%) | 0.836 |
| Age | 56 ± 10 | 56 ± 9 | 56 ± 10 | 0.245 |
| Hypertension | 603 (70%) | 227 (70.7%) | 376 (69.5%) | 0.707 |
| Hyperlypoproteinemia | 488 (56.6%) | 190 (59.2%) | 298 (55.1%) | 0.240 |
| Smoker | 326 (37.9%) | 111 (34.7%) | 215 (39.7%) | 0.140 |
| Diabetes | 118 (13.7%) | 45 (14%) | 73 (13.5%) | 0.828 |
| Family history of CAD c | 509 (59%) | 190 (59.2%) | 319 (59%) | 0.948 |
| Typical chest pain | 293 (34%) | 119 (37.1%) | 174 (32.2%) | 0.141 |
| PTP d (%) | 40.7 ± 13.9 | 42.3 ± 14 | 39.7 ± 13.8 | 0.009 l |
| Duration of the test (minutes) | 7.4 ± 2.7 | 7.4 ± 2.9 | 7.5 ± 2.7 | 0.764 |
| Chronotropic index < 0.8 | 418 (48.5%) | 158 (49.2%) | 260 (48.1%) | 0.761 |
| Achieved target heart rate | 674 (78.2%) | 255 (79.4%) | 419 (77.4%) | 0.494 |
| Maximum achieved SBP e (mmHg) | 180 ± 21.1 | 180 ± 21.2 | 180.1 ± 21.1 | 0.814 |
| Maximum achieved DBP f (mmHg) | 100.4 ± 11.3 | 99.9 ± 12 | 100.5 ± 10.8 | 0.509 |
| Slow HRR g | 45 (5.2%) | 16 (5%) | 29 (5.4%) | 0.810 |
| AE h | 87 (10.1%) | 33 (10.3%) | 54 (10.0%) | 0.888 |
a SECHO—exercise stress echocardiography, b ECG—electrocardiogram, c CAD—coronary artery disease, d PTP—pre-test probability (Diamond–Forrester), e SBP—systolic blood pressure, f DBP—diastolic blood pressure, g HRR—heart rate recovery, h AEs—adverse events (death + myocardial infarction + CABG + PCI).