The effectiveness of a contingent financial incentive to improve trial follow up; a randomised study within a trial (SWAT).
F1000Res
; 8: 1937, 2019.
Article
em En
| MEDLINE
| ID: mdl-32742637
ABSTRACT
Objectives To evaluate the effectiveness of a contingent financial incentive (£10 note in addition to a routinely provided £10 voucher) versus no contingent financial incentive, on improving the retention rate in a randomised controlled trial (RCT). Methods A two arm 'Study within a Trial' (SWAT) embedded within a host RCT (SCIMITAR+). Participants were randomised to the SWAT using a 21 (interventioncontrol) allocation ratio. The primary outcome measure was the proportion of participants completing a CO breath measurement at the first SCIMITAR+ follow up time point (6 months). Secondary outcomes were withdrawing from follow-up after contact and time from assessment due date to completion. Analyses were conducted using logistic or Cox Proportional Hazards regression as appropriate. Results A total of 434 participants were randomised into this SWAT. Completion of the CO breath measurement at 6 months was 88.5% (n=247) in the intervention arm of the SWAT and 85.4% (n=123) in the control arm (Difference 3.1%, OR 1.29, 95% CI 0.71-2.33, p=0.41). There was also no evidence of a difference in the proportion of participants withdrawing from follow-up after contact (intervention n=7 (2.5%), control n=5 (3.5%); OR 0.76, 95% CI 0.23-2.44, p=0.64), nor in terms of proximity of 6-month visit completion to due date (HR 1.07, 95% CI 0.86-1.33, p=0.55). Conclusion It is unclear if contingent financial incentives increased rates of face-to-face follow-up completion within the SCIMITAR+ trial population. However, the sample size of this SWAT was constrained by the size of the host trial and power was limited. This SWAT adds to the body of evidence for initiatives to increase response rates in trials.
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Texto completo:
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Temas:
ECOS
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Aspectos_gerais
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Financiamentos_gastos
Bases de dados:
MEDLINE
Assunto principal:
Pacientes Desistentes do Tratamento
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Participação do Paciente
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Recompensa
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Seguimentos
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Motivação
Tipo de estudo:
Clinical_trials
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Health_economic_evaluation
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Observational_studies
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Prognostic_studies
Aspecto:
Patient_preference
Limite:
Humans
Idioma:
En
Revista:
F1000Res
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Reino Unido