Clinical and procedural characteristics of 395 patients
| Percentage smokers (n=60) | Percentage non-smokers (n=335) | p Value | |
| Clinical characteristics | |||
| Male gender | 86.7 | 79.1 | NS |
| Age (years±SD) | 55.7±9.0 | 64.1±9.9 | <0.0001 |
| Left ventricular ejection fraction (mean±SD) | 53.0±10.5 | 53.3±13.8 | NS |
| Pre-coronary artery bypass graft surgery Canadian Cardiovascular Society Class III–IV | 56.7 | 42.4 | 0.0404 |
| Hyperlipidaemia | 76.7 | 74.6 | NS |
| Hypertension | 58.3 | 63.9 | NS |
| Diabetes mellitus | 21.7 | 29.3 | NS |
| Past smoker | 60.0 | 55.2 | NS |
| Prior myocardial infarction | 41.7 | 35.5 | NS |
| Prior percutaneous coronary intervention | 18.3 | 16.7 | NS |
| Prior coronary artery bypass graft surgery | 0.0 | 2.4 | NS |
| Procedural characteristics | |||
| Primary indication for coronary artery bypass graft surgery | |||
| Unstable angina | 51.7 | 52.2 | NS |
| Stable angina | 15.0 | 17.9 | NS |
| Positive functional test | 8.3 | 13.7 | NS |
| Recent myocardial infarction (<1 month) | 20.0 | 10.7 | 0.0433 |
| Other | 5.0 | 5.5 | NS |
| Multivessel bypass | 88.3 | 94.6 | 0.0636 |
| Grafts used | |||
| Left interior mammary artery | 91.7 | 94.0 | NS |
| Saphenous vein graft | 56.7 | 61.5 | NS |
| Radial | 16.7 | 13.4 | NS |
| Right interior mammary artery | 16.7 | 7.5 | 0.0209 |
| Gastroepiploic | 1.7 | 0.3 | NS |
| Mean grafts/patient (±SD) | 3.2±1.2 | 3.6±1.3 | 0.0174 |