Results of salivary cotinine assessments among those reporting to have quit at six weeks
| Control n (%) | Active n (%) | Total n (%) | |
|---|---|---|---|
| *Comparison of proportion not smoking between control and active gives p value = 0.2. | |||
| Cotinine concentration (ng/ml) | |||
| 0–15* (not smoking) | 6 (14.3) | 17 (20.5) | 23 (18.4) |
| >15 (smoking) | 12 (28.6) | 14 (16.9) | 26 (20.8) |
| Invited to take test but didn’t attend | 24 (57.1) | 52 (62.7) | 76 (60.8) |
| Total | 42 (100) | 83 (100) | 125 (100) |