Table 1.
Baseline characteristics of the study population
| N (%)* | All smokers | Continuers | Quitters |
| N=8737 (100%) | N=6010 (68.8%)† | N=2727 (31.2%)† | |
| Sociodemographics | |||
| Age (years) | |||
| Mean (SD) | 52.6 (8.3) | 52.0 (8.0) | 53.9 (8.5) |
| Income status | |||
| Low to middle | 3927 (45.0%) | 2802 (46.6%) | 1125 (41.3%) |
| Middle to high | 4810 (55.0%) | 3208 (53.4%) | 1602 (58.7%) |
| Disability | |||
| Yes | 75 (0.9%) | 44 (0.7%) | 31 (1.1%) |
| No | 8662 (99.1%) | 5966 (99.3%) | 2696 (98.9%) |
| Health status | |||
| Diabetes duration (years) | |||
| <1 | 4076 (46.6%) | 2910 (48.4%) | 1166 (42.8%) |
| 1–2 | 3553 (40.7%) | 2421 (40.3%) | 1132 (41.5%) |
| ≥3 | 1108 (12.7%) | 679 (11.3%) | 429 (5.7%) |
| BMI (kg/m2) | |||
| <18.5 | 149 (1.7%) | 99 (1.7%) | 50 (1.8%) |
| 18.5–22.9 | 2378 (27.2%) | 1644 (27.4%) | 734 (26.9%) |
| 23–24.9 | 2467 (28.2%) | 1673 (27.8%) | 794 (29.1%) |
| ≥25 | 3741 (42.8%) | 2592 (43.1%) | 1149 (42.1%) |
| Cholesterol level (mg/dL) | |||
| <200 | 4355 (49.9%) | 3001 (49.9%) | 1354 (49.7%) |
| 200–239.9 | 2922 (33.4%) | 2004 (33.3%) | 918 (33.7%) |
| ≥240 | 1449 (16.6%) | 999 (16.6%) | 450 (16.5%) |
| NA | 11 (0.1%) | 6 (0.1%) | 5 (0.2%) |
| Blood pressure (mm Hg) | |||
| <120/80 | 1632 (18.7%) | 1138 (18.9%) | 494 (18.1%) |
| 120/80–139/89 | 5377 (61.5%) | 3676 (61.2%) | 1701 (62.4%) |
| ≥140/90 | 1727 (19.8%) | 1196 (19.9%) | 531 (19.5%) |
| Health behaviour | |||
| Alcohol drinking | |||
| Non-drinker | 2265 (25.9%) | 1526 (25.4%) | 739 (27.1%) |
| Drinker | 6454 (73.8%) | 4470 (74.4%) | 1984 (72.7%) |
| NA | 18 (0.2%) | 14 (0.2%) | 4 (0.2%) |
| Physical activity | |||
| None | 3650 (41.8%) | 2505 (41.7%) | 1145 (42.0%) |
| 1–2/week | 2450 (28.0%) | 1676 (27.9%) | 774 (28.4%) |
| 3 or more/week | 2614 (29.9%) | 1817 (30.2%) | 797 (29.2%) |
| NA | 23 (0.3%) | 12 (0.2%) | 11 (0.4%) |
| History of disease | |||
| CCI (%) | |||
| 0 | 4558 (52.2%) | 3214 (53.5%) | 1344 (49.3%) |
| ≥1 | 4179 (47.8%) | 2796 (46.5%) | 1383 (50.7%) |
| Heart disease | |||
| Yes | 168 (1.9%) | 114 (1.9%) | 54 (2.0%) |
| No | 8569 (98.1%) | 5896 (98.1%) | 2673 (98.0%) |
| Stroke | |||
| Yes | 59 (0.7%) | 37 (0.6%) | 22 (0.8%) |
| No | 8678 (99.3%) | 5973 (99.4%) | 2705 (99.2%) |
| Hypertension | |||
| Yes | 1820 (20.8%) | 1296 (21.6%) | 524 (19.2%) |
| No | 6917 (79.2%) | 4714 (78.4%) | 2203 (80.8%) |
| Cancer | |||
| Yes | 122 (1.4%) | 83 (1.4%) | 39 (1.4%) |
| No | 8615 (98.6%) | 5927 (98.6%) | 2688 (98.6%) |
*Column percentage.
†Row percentage.
BMI, body mass index; CCI, Charlson Comorbidity Index.