Tools
Tools
High, Juliet 
ORCID: https://orcid.org/0000-0003-2555-2349, Grant, Kelly, Hope, Aimie, Shepstone, Lee, West, Claire ORCID: https://orcid.org/0000-0001-7649-9600, Colles, Antony and Naughton, Felix
(2024)
Effects of an increased financial incentive on follow-up in an online, automated smoking cessation trial: A randomised controlled Study Within a Trial (SWAT).
Nicotine and Tobacco Research, 26 (9).
1259–1263.
ISSN 1462-2203
Preview |
PDF (Naughton et al (2024) Quit Sense SWAT accepted)
- Accepted Version
Available under License Creative Commons Attribution. Download (532kB) | Preview |
Abstract
Introduction: Poor retention in clinical trials can impact on statistical power, reliability, validity, and generalizability of findings and is a particular challenge in smoking cessation studies. In online trials with automated follow-up mechanisms, poor response also increases the resource need for manual follow-up. This study compared two financial incentives on response rates at 6 months follow up, in an online, automated smoking cessation feasibility trial of a cessation smartphone app (Quit Sense). Aims and Methods: A study within a trial (SWAT), embedded within a host randomized controlled trial. Host trial participants were randomized 1:1 to receive either a £10 or £20 voucher incentive, for completing the 6-month questionnaire. Stratification for randomization to the SWAT was by minimization to ensure an even split of host trial arm participants and by 6-week response rate. Outcome measures were: Questionnaire completion rate, time to completion, number of completers requiring manual follow-up, and completeness of responses. Results: Two hundred and four participants were randomized to the SWAT. The £20 and £10 incentives did not differ in completion rate at 6 months (79% vs. 74%; p = .362) but did reduce the proportion of participants requiring manual follow-up (46% vs. 62%; p = .018) and the median completion time (7 days vs. 15 days; p = .008). Measure response completeness rates were higher among £20 incentive participants, though differences were small for the host trial’s primary smoking outcome. Conclusions: Benefits to using relatively modest increases in incentive for online smoking cessation trials include more rapid completion of follow-up questionnaires and reduced manual follow-up.
Downloads
Downloads per month over past year
Actions (login required)
 |
View Item |