Sample size estimation for randomised controlled trials with repeated assessment of patient-reported outcomes: what correlation between baseline and follow-up outcomes should we assume?

Sample size estimation for randomised controlled trials with repeated assessment of patient-reported outcomes: what correlation between baseline and follow-up outcomes should we assume?

Abstract Background Patient-reported outcome measures (PROMs) are now frequently used in randomised controlled trials (RCTs) as primary endpoints. RCTs are longitudinal, and many have a baseline (PRE) assessment of the outcome and one or more post-randomisation assessments of outcome (POST). With su...

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Bibliographic Details
Main Authors: Stephen J. Walters, Richard M. Jacques, Inês Bonacho dos Anjos Henriques-Cadby, Jane Candlish, Nikki Totton, Mica Teo Shu Xian
Format: Article
Language:English
Published: BMC 2019-09-01
Series:Trials
Subjects:
Sample size estimation
Review
Randomised controlled trials
Health Technology Assessment
Publicly funded
Correlations
Online Access:http://link.springer.com/article/10.1186/s13063-019-3671-2

Internet

http://link.springer.com/article/10.1186/s13063-019-3671-2

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