| Methods |
Country: USA (California)
Recruitment setting: hospital inpatients |
| Participants |
1942 hospitalized smokers (any tobacco use in week prior to admission)
Counselling delivered by a research nurse |
| Interventions |
1. Intensive: 30‐min inpatient counselling, video, workbook, relaxation tape + 4 phone calls after discharge
2. Minimal: 30‐min counselling etc. + 1 phone call
3. Usual care
Intensity: High |
| Outcomes |
Abstinence at 12 m (PP, sustained abstinence also reported, but not by disease subgroup)
Validation: plasma cotinine or family member corroboration at 12m |
| Notes |
1+2 vs 3 in main analysis ‐ classifying both interventions as high intensity. Cardiovascular and other diagnoses separated in analysis by setting. 1 vs 2 in analysis of effect of additional telephone contact (sustained abstinence) |
| 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 |
"Nurses opened sealed envelopes in front of patients to determine patients' assignments." |
| Incomplete outcome data (attrition bias)
All outcomes |
Low risk |
Deaths excluded from MA denominator; all others lost to follow‐up considered smokers; similar loss to follow‐up across all groups (10%) |
