Preoperative demographic and clinical characteristics of 12 202 patients who underwent myocardial revascularization surgery between 1992 and 2004 at the Institut universitaire de cardiologie et de pneumologie de Québec, by cohort
| Characteristic | Patient cohort; %* | p value | |
|---|---|---|---|
| 1993–1998 (n = 5009) | 1999–2004 (n = 7193) | ||
| Age, mean (SD) yr | 63.0 (10.1) | 64.4 (10.4) | < 0.001 |
| > 80 | 1.5 | 4.9 | < 0.001 |
| > 75 | 10.5 | 18.1 | < 0.001 |
| Sex, male:female | 77.0:23.0 | 76.2:23.8 | 0.31 |
| Diabetes | 25.4 | 32.1 | < 0.001 |
| BMI, mean (SD) kg/m2 | 27.7 (4.3) | 27.9 (4.7) | 0.036 |
| > 30 kg/m2 | 24.7 | 27.5 | < 0.001 |
| Hypertension | 51.2 | 64.7 | < 0.001 |
| Cerebrovascular disease | 5.6 | 9.5 | < 0.001 |
| Peripheral vascular disease | 15.4 | 17.2 | 0.009 |
| Active smoking | 26.5 | 18.0 | < 0.001 |
| COPD | 21.0 | 12.0 | < 0.001 |
| Atrial fibrillation | 3.4 | 4.6 | 0.002 |
| Parsonnet score, mean (SD) | 8.7 (7.0) | 9.5 (7.2) | < 0.001 |
| > 20 | 6.5 | 10.0 | < 0.001 |
| CCS class IV | 21.6 | 20.1 | < 0.001 |
| Recent myocardial infarction (< 7 d) | 1.3 | 1.9 | 0.014 |
| Myocardial infarction | 60.1 | 50.8 | < 0.001 |
| Stenosis of the left main trunk (> 50%) | 14.2 | 22.3 | < 0.001 |
| Left ventricular ejection fraction (< 40%) | 8.9 | 8.7 | 0.66 |
| Diabetic patients | 12.1 | 12.6 | 0.74 |
| Dilatation/stent placement | 10.2 | 12.8 | < 0.001 |
| Diabetic patients | 10.2 | 14.0 | 0.003 |
BMI = body mass index; CCS = Canadian Cardiovascular Society; COPD = chronic obstructive pulmonary disease; SD = standard deviation.
↵* Unless otherwise indicated.