Theoretically-informed vs standard cover letter to improve participant response to mailed questionnaire: results of an embedded randomised retention trial

Theoretically-informed vs standard cover letter to improve participant response to mailed questionnaire: results of an embedded randomised retention trial

Abstract Background Participant non-response is a source of bias in all research, especially in randomised controlled trials. Participants followed up remotely can have high non-response rates. Four such trials have been conducted of a cover letter with content informed by behaviour change theory to...

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Bibliographic Details
Main Authors: Colin C. Everett, Sarah T. Brown, Joanna L. Dennett, Howard Collier, Claire L. Davies, Frances Game, E Andrea Nelson
Format: Article
Language:English
Published: BMC 2024-11-01
Series:Trials
Subjects:
SWAT
Study within a trial
Retention methods
Embedded randomised controlled trial
Surveys and questionnaires
Behavioural change theory
Online Access:https://doi.org/10.1186/s13063-024-08565-0
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https://doi.org/10.1186/s13063-024-08565-0

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