| Methods |
Setting: 17 oncology centres in USA.
Recruitment: cancer patients recruited by participating physicians (unselected). |
| Participants |
432 smokers with cancer (406 surviving at 12m); 66% F, av cpd 20. |
| Interventions |
1. Advice and self‐help manual, prescription of NRT if appropriate. Possible follow‐up.
2. Usual care.
Intervention level: intensive.
Aids used: yes. Follow ‐up visits: not routinely. |
| Outcomes |
PP abstinence at 12m.
Validation: none. |
| Notes |
34% of intervention and 19% of usual care group prescribed NRT. |
| Risk of bias |
| Bias |
Authors' judgement |
Support for judgement |
| Random sequence generation (selection bias) |
Unclear risk |
"Using permuted blocks with dynamic balancing within the recruitment sites." Method of sequence generation not specified. |
| Allocation concealment (selection bias) |
Unclear risk |
Not specified. |
| Incomplete outcome data (attrition bias)
All outcomes |
Low risk |
Similar number lost to follow‐up in both groups (41/215 in intervention, 37/217 in control). Apart from deaths, non‐respondents included in denominators. |
