Table 3.
Number of 25 mg capsules of nortriptyline or placebo used by trial arm by time
| Variable | Median (interquartile range)* | z score, P value† |
|---|---|---|
| Quit day: | ||
| Nortriptyline | 2 (2-3) | −0.22, 0.83 |
| Placebo | 2 (2-3) | |
| Week 1: | ||
| Nortriptyline | 3 (2-3) | −1.05, 0.29 |
| Placebo | 3 (3-3) | |
| Week 2: | ||
| Nortriptyline | 3 (2-3) | −3.08, 0.002 |
| Placebo | 3 (3-3) | |
| Week 3: | ||
| Nortriptyline | 3 (2-3) | −2.78, 0.006 |
| Placebo | 3 (3-3) | |
| Week 4: | ||
| Nortriptyline | 3 (1-3) | −2.66, 0.008 |
| Placebo | 3 (2-3) |
*Among those using trial drug at this point.
†Difference between trial arms (Mann-Whitney U test).