NCT03538938.
Study name | Improving Quitline Support Study: optimizing remotely delivered smoking cessation services for low‐income smokers |
Methods | Four factor (2 x 2 x 2 x 2) factorial randomised controlled trial Country: USA Recruitment: at the follow‐up call 4 to 18 months after participating in the standard Wisconsin Tobacco Quit Line (WTQL) programme |
Participants | 1600 smokers still smoking 4 to 18 months after standard WTQL treatment; 18+ years old; uninsured, covered by a Medicaid programme, or has no more than high school education |
Interventions | 2 x 2 x 2 x 2 factorial design (16 possible treatment combinations): 1. Quit‐line counselling intensity
2. NRT intensity
3. SmokefreeTXT interactive text messages (up to 5 messages per day for up to 2 weeks prior to the target quit day and 6 weeks following the target quit day)
4. Financial incentives for treatment engagement
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Outcomes | 7‐day PPA at 6 months Validation: saliva sample for cotinine testing with a value of < 4 ng/mL Self‐reported abstinence at 12 weeks, continuous abstinence between 1 and 6 months Adverse events: not listed as an outcome |
Starting date | 7 June 2018 |
Contact information | Danielle E McCarthy, University of Wisconsin Center for Tobacco Research and Intervention, School of Medicine and Public Health |
Notes | Sponsor: Massachusetts General Hospital Estimated study completion date: 1 January 2023 |