Smoking cessation rates after 12 months of follow up stratified by baseline spirometric results
| Spirometric results | Normal | Airway obstruction | |||
|---|---|---|---|---|---|
| Mild | Moderate | Severe | Any | ||
| *The p value compares the cessation rate in smokers with airway obstruction with the rate in smokers with normal spirometric results. | |||||
| All subjects (n) | 3441 | 384 | 939 | 357 | 1680 |
| Quitters (n) | 413 | 56 | 151 | 66 | 273 |
| Cessation rate (%) | 12.0% | 14.6% | 16.1% | 18.5% | 16.3% |
| p value* | – | 0.229 | 0.005 | 0.003 | 0.0003 |