Table 2 Self-reported abstinence at each visit
| Â | Responders | ITT | ||||
|---|---|---|---|---|---|---|
Variable | Intervention | Control | p-value | Intervention | Control | p-value |
Outcome measure at 3Â months | ||||||
 7 days abstinence | 31/101 (30.7%) | 26/98 (26.5%) | 0.516 | 31/167 (18.6%) | 26/147 (17.7%) | 0.841 |
 30 days abstinence | 27/101 (26.7%) | 22/98 (22.4%) | 0.483 | 27/167 (16.2%) | 22/147 (15.0%) | 0.770 |
 Continuous abstinence | 25/101 (24.8%) | 21/98 (21.4%) | 0.578 | 25/167 (15.0%) | 21/147 (14.3%) | 0.864 |
Outcome measure at 6Â months | ||||||
 7 days abstinence | 28/100 (28.0%) | 21/99 (21.2%) | 0.324 | 28/167 (16.8%) | 21/147 (14.3%) | 0.546 |
 30 days abstinence | 27/100 (27.0%) | 20/99 (20.2%) | 0.259 | 27/167 (16.2%) | 20/147 (13.6%) | 0.525 |
 Continuous abstinence | 23/100 (23.0%) | 20/99 (20.2%) | 0.632 | 23/167 (13.8%) | 20/147 (13.6%) | 0.966 |
Outcome measure at 12Â months | ||||||
 7 days abstinence | 21/88 (23.9%) | 14/83 (16.9%) | 0.257 | 21/167 (12.6%) | 14/147 (9.5%) | 0.391 |
 30 days abstinence | 21/88 (23.9%) | 14/83 (16.9%) | 0.257 | 21/167 (12.6%) | 14/147 (9.5%) | 0.391 |
 Continuous abstinence | 21/88 (23.9%) | 14/83 (16.9%) | 0.257 | 21/167 (12.6%) | 14/147 (9.5%) | 0.391 |
Continuous abstinence at 12 months incorporating data from visits 3 and 6 and 12‡ | 9/68 (13.2%) | 6/68 (8.8%) | 0.412 | 9/167 (5.4%) | 6/147 (4.1%) | 0.588 |