Effects of an Increased Financial Incentive on Follow-up in an Online, Automated Smoking Cessation Trial: A randomized Controlled Study Within a Trial.
Nicotine Tob Res
; 26(9): 1259-1263, 2024 Aug 22.
Article
em En
| MEDLINE
| ID: mdl-38513087
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 ANDMETHODS:
A study within a trial (SWAT), embedded within a host randomized controlled trial. Host trial participants were randomized 11 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%; pâ =â .362) but did reduce the proportion of participants requiring manual follow-up (46% vs. 62%; pâ =â .018) and the median completion time (7 days vs. 15 days; pâ =â .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. IMPLICATIONS A modest increase in incentive (from £10 to £20) to promote the completion of follow-up questionnaires in online smoking cessation trials may not increase overall response rates but could lead to more rapid data collection, a reduced need for manual follow-up and reduced missing data among those who initiate completing a questionnaire. Such an improvement may help to reduce bias, increase validity and generalizability, and improve statistical power in smoking cessation trials. TRIAL REGISTRATION Host trial ISRCTN12326962, SWAT repository store ID 164.
Texto completo:
1
Coleções:
01-internacional
Contexto em Saúde:
1_ASSA2030
/
2_ODS3
Base de dados:
MEDLINE
Assunto principal:
Abandono do Hábito de Fumar
/
Motivação
Limite:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Nicotine Tob Res
Ano de publicação:
2024
Tipo de documento:
Article