Table 1.
Patient characteristics
| Study Population (n = 3,024) | |
| Age at operation (years) | 64.3 (58.4 to 70.0) |
| Female sex (%) | 19.9 |
| Body mass index (kg/m2) | 27.6 (25.3 to 30.4) |
| Angina class IV (%) | 32.9 |
| Current smoker (%) | 15.8 |
| Previous myocardial infarction (%) | 44.2 |
| Diabetes (%) | 17.6 |
| Hypercholesteroleamia (%) | 83.8 |
| Hypertension (%) | 55.3 |
| Peripheral vascular disease (%) | 13.8 |
| Cerebrovascular disease (%) | 8.2 |
| Renal dysfunction (%) | 2.7 |
| Respiratory disease (%) | 31.6 |
| Ejection fraction <30% (%) | 8.7 |
| Three-vessel disease (%) | 81.3 |
| Left main stenosis >50% (%) | 20.1 |
| Prior cardiac intervention (%) | 5.1 |
| Prior cardiac surgery (%) | 2.5 |
| Urgent procedure (%) | 16.9 |
| Emergent procedure (%) | 1.4 |
Continuous variables are shown as median with 25th and 75th percentiles.
Categorical variables are shown as a percentage.