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Smoking cessation by recruitment method
| Recruitment method: | Database | Opportunistic | Total | |||
|---|---|---|---|---|---|---|
| N | % | N | % | N | % | |
| All available data | ||||||
| Number who have stopped smoking at follow‐up | 34 | 8.5 | 5 | 14.3 | 39 | 9.0 |
| Number who returned questionnaire | 399 | 35 | 434 | |||
| Those included in the primary analysis | ||||||
| Number who have stopped smoking at follow‐up | 31 | 8.2 | 5 | 15.2 | 36 | 8.8 |
| Number who returned questionnaire | 376 | 33 | 409 | |||
