Selected characteristics of smokers and smoking behaviours according to cigarette nicotine yield
| Nicotine yield (mg/cigarette) | |||||
|---|---|---|---|---|---|
| Variables | Ultra low yield (0–0.1) n=19 | Low yield (0.1–<0.6) n=88 | Medium yield (0.6–<1.0) n=102 | High yield (≥1.0) n=37 | χ2 |
| χ2 tests of the relation between smoking behaviours and cigarette nicotine yield were conducted. | |||||
| Age, mean (SD) | 44.7 (7.5) | 39.1 (8.6) | 39.3 (10.0) | 40.0 (9.8) | 39.7 (9.4) (all) |
| Number of years smoked, mean (SD) | 24.4 (9.0) | 20.0 (8.0) | 19.6 (9.4) | 20.7 (9.2) | 20.3 (8.9) (all) |
| Inhalation pattern | |||||
| Light | 15.8 | 5.7 | 7.9 | 2.7 | |
| Medium | 63.2 | 35.2 | 33.7 | 27.0 | p=0.031 |
| Deep | 21.0 | 59.1 | 58.4 | 70.3 | |
| Time to first morning cigarette (%) | |||||
| ≤5 mins | 15.8 | 26.1 | 33.7 | 48.6 | |
| 5 mins to ≤30 mins | 47.4 | 43.2 | 43.6 | 35.2 | p=0.053 |
| 30 mins to < 60 mins | 21.0 | 17.1 | 5.9 | 13.5 | |
| ≥60 mins | 15.8 | 13.6 | 16.8 | 2.7 | |
| Stage of change | |||||
| Precontemplation | 78.9 | 95.5 | 93.1 | 94.6 | |
| Contemplation | 15.8 | 3.4 | 5.9 | 5.4 | p=0.260 |
| Preparation | 5.3 | 1.1 | 1 | 0 | |
| Quit attempts in the past (%) | |||||
| Yes | 78.9 | 54.6 | 43.6 | 29.7 | p=0.002 |
| No | 21.1 | 45.4 | 56.4 | 70.3 | |