Quitting rates related to varenicline duration at 6-month follow-up (n=332)
| Duration of varenicline | Quitting rates % (n) | OR (95% CI) | p Value* | p for Trend | OR (95% CI) | p Value† |
|---|---|---|---|---|---|---|
| 7-day PPAR | ||||||
| ≥9 weeks | 56.0 (14/25) | 2.48 (1.06 to 5.80) | 0.036 | 0.067 | 2.11 (0.89 to 5.01) | 0.090 |
| 4–8 weeks | 40.7 (50/133) | 1.17 (0.73 to 1.88) | 0.504 | 1.00 | ||
| <4 weeks | 33.9 (59/174) | 1.00 | ||||
| 3-month CAR | ||||||
| ≥9 weeks | 48.0 (12/25) | 2.17 (0.93 to 5.06) | 0.074 | 0.085 | 1.75 (0.74 to 4.13) | 0.205 |
| 4–8 weeks | 34.6 (46/133) | 1.24 (0.77 to 2.01) | 0.382 | 1.00 | ||
| <4 weeks | 29.9 (52/174) | 1.00 | ||||
*Compared with subjects receiving varenicline <4 weeks.
†Compared with subjects receiving varenicline 4–8 weeks.
CAR, continuous abstinence rate; PPAR, point prevalence abstinence rate.