Table 2. Baseline Characteristics of Patients in Quality of Life Substudy by Intention to Treat.
| PCI (n=477) | Medical therapy alone (n=474) | P-value | |
|---|---|---|---|
| Age, years | 59.5±10.9 | 59.0±11.3 | 0.50 |
| Median (25th, 75th) | 59.0 (52.0 to 68.0) | 59.0 (51.0 to 68.0) | |
| Female | 20.6 | 22.8 | 0.40 |
| Non-white | 16.8 | 17.7 | 0.13 |
| Medical History | |||
| History of angina | 22.3 | 22.8 | 0.86 |
| Prior myocardial infarction | 15.8 | 11.7 | 0.07 |
| History of cerebrovascular disease | 5.7 | 3.0 | 0.04 |
| Prior stroke | 4.5 | 2.4 | 0.09 |
| History of peripheral vascular disease | 5.7 | 3.2 | 0.07 |
| History of renal insufficiency | 1.7 | 0.6 | 0.13 |
| History of ICD | 0.8 | 0.2 | 0.18 |
| History of congestive heart failure | 4.0 | 3.2 | 0.51 |
| Prior percutaneous coronary intervention | 5.9 | 5.9 | 1.00 |
| Prior coronary artery bypass grafting | 0.8 | 0.6 | 0.71 |
| Cardiac Risk Factors | |||
| Diabetes | 20.6 | 24.6 | 0.14 |
| Hypercholesterolemia | 59.8 | 58.9 | 0.78 |
| Hypertension | 50.4 | 49.3 | 0.72 |
| Current smoker | 35.1 | 38.8 | 0.36 |
| NYHA Class | 0.53 | ||
| I | 88.2 | 86.7 | |
| II | 8.7 | 9.1 | |
| III | 1.3 | 2.5 | |
| IV | 1.9 | 1.7 | |
Age values are presented as means (standard deviation) and medians (25th to 75th percentiles). All other values are N (percent). ICD = implantable cardioverter-defibrillator, NYHA = New York Heart Association.
Race was self reported on the clinical case report form.