Table 1 Basal characteristics of the study subjects according to groups of changes in smoking habit
| Â | Continual smokers | Quitters | Sustained ex-smokers | Never smokers |
|---|---|---|---|---|
Number of people | 475 | 251 | 779 | 867 |
Age, years, mean (SD) | 59.9 (9.4) | 60.7 (9.6) | 62.9 (9.9) | 64.1 (9.6) |
Household income, quartiles, N (%) | ||||
 1st (highest) | 160 (33.7) | 101 (40.2) | 365 (46.9) | 377 (43.5) |
 2nd | 155 (32.6) | 65 (25.9) | 197 (25.3) | 238 (27.5) |
 3rd | 94 (19.8) | 55 (21.9) | 133 (17.1) | 145 (16.7) |
 4th (lowest) | 66 (13.9) | 30 (12.0) | 84 (10.8) | 107 (12.3) |
Alcohol consumption, times per week, N (%) | ||||
 0 | 146 (30.7) | 136 (54.2) | 356 (45.7) | 513 (59.2) |
 0–1 | 91 (19.2) | 42 (16.7) | 141 (18.1) | 143 (16.5) |
 1–2 | 116 (24.4) | 43 (17.1) | 122 (15.7) | 116 (13.4) |
 3–4 | 60 (12.6) | 21 (8.4) | 95 (12.2) | 62 (26.1) |
  ≥ 5 | 62 (13.1) | 9 (3.6) | 65 (8.3) | 33 (3.8) |
Physical exercise, times per week, N (%) | ||||
 0 | 227 (47.8) | 133 (53.0) | 340 (43.7) | 407 (46.9) |
 1–2 | 145 (30.5) | 53 (21.1) | 219 (28.1) | 206 (23.8) |
 3–4 | 56 (11.8) | 30 (12.0) | 121 (15.5) | 117 (13.5) |
 5–6 | 18 (3.8) | 13 (5.2) | 56 (7.2) | 54 (6.2) |
 7 | 29 (6.1) | 22 (8.8) | 43 (5.5) | 83 (9.6) |
Body mass index, kg/m2, mean (SD) | 23.8 (3.0) | 23.9 (3.1) | 24.4 (2.9) | 24.2 (2.8) |
Systolic blood pressure, mmHg, mean (SD) | 125.1 (16.5) | 124.5 (16.1) | 125.8 (15.7) | 126.6 (15.6) |
Fasting serum glucose, mg/dL, mean (SD) | 104.0 (32.3) | 103.1 (27.5) | 104.8 (28.2) | 102.8 (27.5) |
Total cholesterol, mg/dL, mean (SD) | 188.7 (36.1) | 192.2 (38.1) | 185.6 (35.2) | 182.3 (35.8) |
Charlson comorbidity index, N (%) | Â | |||
  ≤ 1 | 185 (39.0) | 84 (33.5) | 281 (36.1) | 333 (38.4) |
 2 | 106 (22.3) | 49 (19.5) | 163 (20.9) | 172 (19.8) |
 3 | 80 (14.7) | 37 (14.7) | 128 (16.4) | 151 (17.4) |
  ≥ 4 | 114 (24.0) | 81 (32.3) | 207 (26.6) | 211 (24.3) |
Aspirin use, N (%) | 277 (58.3) | 151 (60.2) | 501 (64.3) | 558 (64.4) |
Warfarin use, N (%) | 79 (16.6) | 58 (23.1) | 183 (23.5) | 232 (26.8) |