| Methods |
Country: Japan
Recruitment setting: Workplace annual health check |
| Participants |
228 male smokers, av. age 39, av. cpd 23 |
| Interventions |
1. 15 ‐ 20‐min stage‐matched counselling by trained nurses. 4 follow‐up calls for those willing to set a quit date. 1 wk after intervention, 3 ‐ 4 days , 1 m, 3 m after cessation
2. Usual care |
| Outcomes |
Sustained abstinence at 12 m (> 6 m, validated at 6 m and 12 m)
Validation: CO, urine |
| Notes |
25 from intervention group set quit date
More intervention group in preparation/contemplation II subgroups at baseline; 17 vs 7 |
| Risk of bias |
| Bias |
Authors' judgement |
Support for judgement |
| Random sequence generation (selection bias) |
Unclear risk |
Method of sequence generation not specified |
| Allocation concealment (selection bias) |
Low risk |
"Randomly divided into two groups before contact with subject. Participants' employee ID numbers were used for assignment." |
| Incomplete outcome data (attrition bias)
All outcomes |
Low risk |
No loss to follow‐up reported in either group |
