Table 1.
Type and Results of Pre-Randomization Stress Testing
| PCI Group (n=297) | MED Group (n=301) | P value | |
|---|---|---|---|
| A. Type of stress | 0.93 | ||
| Exercise | 215 (72%) | 212 (70%) | |
| Dobutamine | 27 (9%) | 28 (9%) | |
| Dipyridamole | 36 (12%) | 40 (13%) | |
| Adenosine | 13 (4 %) | 12 (4%) | |
| Other | 6 (2%) | 9 (3%) | |
| B. Method of recording | 0.77 | ||
| Radionuclide | 83 (28%) | 96 (32%) | |
| Echocardiography | 30 (10%) | 28 (9%) | |
| Electrocardiography | 182 (61%) | 175 (58%) | |
| Other | 2 (1%) | 2 (1%) | |
| C. Stress test results for ischemia in IRA distribution: | 0.21 | ||
| Severe (Ineligible) | 0 (0%) | 1 (0.3%) | |
| Moderate | 27 (9%) | 32 (11%) | |
| Mild | 100 (34%) | 80 (27%) | |
| None | 170 (57%) | 188 (63%) | |
| D. Stress test results for ischemia in non-IRA distribution: | 0.20 | ||
| Severe | 0 (0%) | 4 (1%) | |
| Moderate | 12 (4%) | 16 (5%) | |
| Mild | 39 (13%) | 40 (13%) | |
| None | 246 (83%) | 241 (80%) |
IRA = infarct-related artery; PCI = Percutaneous Coronary Intervention; MED = Medical Therapy Alone