Table 2.
Baseline characteristics
| Current smokers | Ex-smokers | Number of patients (studies) for which data were retrievable | |
| Total | 8402 | 25 828 | 34 230 (13) |
| Age (mean±SD, years) | 65.5±1.6 | 60.9±1.5 | 22 079 (7) |
| Female (%) (95% CI) | 11.8 (5.3 to 24.4) | 11.4 (6.4 to 19.6) | 14 397 (6) |
| Preoperative hypertension (%) (95% CI) | 60.0 (49.1 to 70.0) | 63.3 (52.9 to 72.6) | 22 079 (7) |
| Preoperative hypercholesterolaemia (%) (95% CI) | 50.1 (22.9 to 77.3) | 57.5 (36.3 to 76.2) | 19 940 (5) |
| Preoperative left main disease (%) (95% CI) | 23.5 (20.8 to 26.3) | 21.6 (17.8 to 26.0) | 26 918 (5) |
| Preoperative congestive heart failure (%) (95% CI) | 23.3 (12.6 to 38.9) | 24.0 (13.3 to 39.4) | 21 703 (5) |
| Preoperative PHx of MI or recent MI (%) (95% CI) | 28.5 (18.4 to 41.2) | 18.6 (10.7 to 30.3) | 23 889 (6) |
| Preoperative diabetes mellitus (%) 95% CI) | 20.6 (15.8 to 26.5) | 23.8 (18.9 to 29.5) | 28 993 (8) |
| Preoperative peripheral vascular disease (%) (95% CI) | 13.4 (10.7 to 16.8) | 12.0 (9.7 to 14.7) | 26 507 (6) |
| Preoperative PHx of CVA/CVD (%) (95% CI) | 9.9 (7.0 to 13.9) | 12.8 (9.2 to 17.5) | 23 552 (5) |
| Preoperative COPD (%) (95% CI) | 17.6 (11.6 to 25.9) | 14.6 (9.7 to 21.3) | 30 532 (8) |
| Preoperative renal failure (%) (95% CI) | 2.6 (2.0 to 3.4) | 3.3 (2.7 to 4.0) | 26 170 (5) |
| Cardiopulmonary bypass time (mean±SD, min) | 102.5±5.2 | 97.0±8.9 | 20 240 (6) |
| Cross clamp time (mean±SD, min) | 81.0±5.2 | 78.6±8.5 | 19 940 (5) |
COPD, chronic obstructive pulmonary disease; CVA, cerebrovascular accident; CVD, cardiovascular disease; MI, myocardial infarction; Phx, past history.