Baseline demographic and clinical variables
| Variable | PCI N=15 078 | CABG N=7802 | p Value |
|---|---|---|---|
| Age years (mean±SD) | 65±11 | 67±10 | <0.001 |
| Gender (male/female) % | 73.0/27.0 | 78.2/21.8 | <0.001 |
| Ejection fraction % (mean±SD) | 68±12 | 67±12 | 0.04 |
| LVEDP mm Hg (mean±SD) | 14.1±4.8 | 15.3±5.9 | <0.001 |
| Generalised arteriosclerosis % (number) | 4.6 (696) | 7.0 (548) | <0.001 |
| Other significant disease % (number) | 6.2 (933) | 5.6 (438) | 0.08 |
| Exercise ECG % (number) | <0.001 | ||
| Not performed | 37.4 (5281) | 29.2 (2155) | |
| Negative exercise test | 9.9 (1395) | 6.0 (444) | |
| Inconclusive result | 25.1 (3536) | 20.5 (1511) | |
| Ischaemic exercise response | 27.7 (3904) | 44.4 (3279) | |
| CCS function class % (number) | |||
| 0 | 1.9 (254) | 1.9 (137) | |
| I | 5.9 (809) | 4.7 (336) | |
| II | 37.7 (5143) | 33.5 (2374) | |
| III | 40.5 (5519) | 46.8 (3316) | |
| IV | 14.1 (1917) | 13.0 (924) | <0.001 |
| Unstable angina % (number) | 29.3 (4416) | 27.0 (2106) | <0.001 |
| Diabetes % (number) | 13.3 (1998) | 16.4 (1278) | <0.001 |
| Hypertension % (number) | 32.5 (4904) | 36.5 (2845) | <0.001 |
| Current smoker % (number) | 21.6 (3253) | 19.4 (1512) | <0.001 |
| Previous myocardial infarction % (number) | 36.3 (5450) | 36.5 (2843) | 0.68 |
| Previous PCI % (number) | 17.0 (2549) | 8.4 (655) | <0.001 |
| Previous CABG % (number) | 12.5 (1878) | 2.1 (163) | <0.001 |
| Radial entry site % (number) | 84.2 (12 701) | 82.4 (6430) | <0.001 |
| Coronary angiography | |||
| One-vessel disease % (number) | 46.2 (7029) | 2.2 (175) | |
| Two-vessel disease % (number) | 30.1 (4534) | 17.9 (1400) | |
| Three-vessel disease % (number) | 23.3 (3515) | 79.8 (6227) | <0.001 |
Generalised arteriosclerosis is defined as previous known extra-cardiac arteriosclerotic symptoms. CCS, Canadian Cardiovascular Society functional class for angina. Diabetes is defined as previously known and treated with diet or drugs. Other significant disease is defined as renal, hepatic or pulmonary disease and serious obesity deemed of importance in the treatment at the discretion of the physician. Unstable angina also includes patients with non ST-elevation myocardial infarction.
EECG=exercise ECG; LVEDP, left ventricular end diastolic pressure.