Baseline clinical characteristics of current smokers, ex-smokers, and non-smokers
| Non-smokers | Ex-smokers | Current smokers | Significance level | |
| Number of patients | 728 | 1690 | 530 | |
| Men | 65.3% | 87.5%1-150 | 85.9%1-150 | 0.000 |
| Age (years) (mean (SD)) | 59.9 (9.4) | 57.0 (9.1)1-150 | 54.0 (9.0) | 0.000 |
| Previous myocardial infarct | 37.9% | 43.9%1-150 | 42.9%1-150 | 0.022 |
| Previous CABG | 3.6% | 4.6% | 4.0% | 0.470 |
| Previous PTCA | 4.1% | 5.1% | 5.5% | 0.486 |
| Diabetes mellitus | 12.6% | 9.5%1-150 | 9.1%1-150 | 0.043 |
| IDDM | 1.8% | 0.7%1-150 | 0.4%1-150 | 0.009 |
| History of hypertension | 37.2% | 29.3%1-150 | 24.9%1-150 | 0.000 |
| History of hypercholesterolaemia | 32.0% | 31.5% | 31.9% | 0.965 |
| History of PVD | 2.3% | 5.5%1-150 | 7.2%1-150 | 0.000 |
| Anginal class | ||||
| None | 6.3% | 5.8% | 4.3% | |
| CCS class I | 9.8% | 11.7% | 11.3% | |
| CCS class II | 34.6% | 32.6% | 29.4% | |
| CCS class III | 31.5% | 29.9% | 29.1% | |
| CCS class IV | 17.9% | 20.2% | 25.9%1-150 1-151 | 0.032 |
| Duration of angina (weeks) (mean (SD)) | 120 (208) | 111 (209) | 94 (202) | 0.205 |
| Days since deterioration of angina (mean (SD)) | 80 (198) | 79 (181) | 65 (127) | 0.524 |
| Drug treatment at screening | ||||
| β Blockers | 52.3% | 49.2% | 51.5% | 0.321 |
| Calcium antagonists | 65.4% | 70.4%1-150 | 72.3%1-150 | 0.016 |
| Nitrates | 62.1% | 66.7% | 66.2% | 0.659 |
| Anticoagulants | 0.8% | 1.5% | 2.5% | 0.067 |
| Platelet inhibitor | 64.3% | 63.5% | 67.7% | 0.203 |
| Aspirin | 77.9% | 83.4%1-150 | 83.1%1-150 | 0.032 |
| Persantin | 10.6% | 11.6% | 15.2% | 0.121 |
| Laboratory investigations (mean (SD)) | ||||
| Haemoglobin (g/dl) | 8.72 (0.86) | 8.89 (0.80) | 8.99 (0.86)1-150 | 0.000 |
| Packed cell volume (%) | 41 (4) | 42 (4) | 43 (4)1-150 | 0.000 |
| White cell count (G/l) | 7.05 (2.94) | 7.34 (2.09) | 8.26 (2.24)1-150 1-151 | 0.000 |
| Platelet count (G/l) | 260 (80) | 255 (66) | 258 (70) | 0.276 |
| Total cholesterol (mmol/l) | 5.88 (1.31) | 5.80 (1.21) | 5.88 (1.20) | 0.249 |
| HDL cholesterol (mmol/l) | 1.20 (0.34) | 1.13 (0.56) | 1.11 (0.69) | 0.477 |
| LDL cholesterol (mmol/l) | 4.15 (1.18) | 4.16 (1.33) | 3.94 (1.20) | 0.519 |