Table 2. Baseline clinical and procedural characteristics, after matching.
| Current smokers | Never smokers | P-value | |
|---|---|---|---|
| (n = 140) | (n = 140) | ||
| Patient characteristics | |||
| Age, years | 57.9 ± 9.7 | 58.1 ± 9.5 | MV |
| Male gender, n (%) | 108 (77.1) | 108 (77.1) | MV |
| Hypertension, n (%) | 58 (41.4) | 73 (52.1) | 0.10 |
| Dyslipidemia, n (%) | 74 (52.9) | 74 (52.9) | 1.00 |
| Diabetes mellitus, n (%) | 19 (13.6) | 28 (20.0) | 0.21 |
| Positive family history, n (%) | 68 (48.9) | 75 (53.6) | 0.53 |
| Peripheral artery disease, n (%) | 12 (8.6) | 7 (5.0) | 0.36 |
| Previous MI, n (%) | 33 (23.6) | 35 (25.0) | 0.89 |
| Previous PCI, n (%) | 33 (23.6) | 45 (32.1) | 0.11 |
| Previous CABG, n (%) | 0 (0.0) | 3 (2.1) | 0.25 |
| Previous stroke, n (%) | 4 (2.9) | 7 (5.0) | 0.51 |
| History of renal insufficiency, n (%) | 6 (4.3) | 11 (7.9) | 0.33 |
| Procedural characteristics | |||
| Indication for catheterization | MV | ||
| Acute coronary syndrome, n (%) | 96 (68.6) | 96 (68.6) | |
| Stable angina pectoris, n (%) | 44 (31.4) | 44 (31.4) | |
| Coronary artery disease | 0.33 | ||
| No significant stenosis, n (%) | 6 (4.3) | 14 (10.0) | |
| 1-vessel disease, n (%) | 74 (52.9) | 76 (54.3) | |
| 2-vessel disease, n (%) | 47 (33.6) | 36 (25.7) | |
| 3-vessel disease, n (%) | 13 (9.3) | 14 (10.0) | |
| Vessel imaged by VH-IVUS | 0.51 | ||
| LAD | 56 (40.0) | 50 (35.7) | |
| RCA | 40 (28.6) | 43 (30.7) | |
| LCX | 44 (31.4) | 47 (33.6) | |
MV, matching variable. Values are mean ± SD or n (%).
P-values were obtained by paired samples t-test, McNemar test or Marginal Homogeneity, whichever was appropriate.