26-Week smoking abstinence
| 6-Month abstinence measure | PO group, n/N (%) | Cost-free group, n/N (%) | OR (95% CI) | p Value | Adjusted OR (95% CI)* | p Value* |
| Continuous abstinence | 2/13 (15.4) | 5/15 (33.3) | 2.75 (0.43 to 17.5) | 0.26 | 5.51 (0.44 to 69.3) | 0.19 |
| 7-Day point prevalence abstinence | 3/13 (23.1) | 5/15 (33.3) | 1.67 (0.31 to 8.9) | 0.43 | 2.25 (0.25 to 20.4) | 0.47 |
| Biochemically validated 7-day point prevalence abstinence | 2/13 (15.4) | 4/15 (26.6) | 2.00 (0.33 to 13.3) | 0.40 | 5.95 (0.40 to 88.7) | 0.20 |
↵* Adjusted for number of cigarettes smoked per day and self-efficacy.
CF, cost-free pharmacotherapy; PO, prescription only.