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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?

Crossref DOI link: https://doi.org/10.1186/s13063-019-3671-2

Published Online: 2019-09-13

Published Print: 2019-12

Update policy: https://doi.org/10.1007/springer_crossmark_policy

Authors

Walters, Stephen J. http://orcid.org/0000-0001-9000-8126
Jacques, Richard M.

dos Anjos Henriques-Cadby, Inês Bonacho

Candlish, Jane

Totton, Nikki

Xian, Mica Teo Shu
License Information

Text and Data Mining valid from 2019-09-13

Version of Record valid from 2019-09-13
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Article History

Received: 20 March 2019

Accepted: 20 August 2019

First Online: 13 September 2019

Change Date: 28 October 2019

Change Type: Correction

Change Details: Following publication of the original article [1], we have been notified that one of an error in the Conclusions section of the Abstract.

Ethics approval and consent to participate

: Secondary ethics approval was gained through the University of Sheffield School of Health and Related Research Ethics Committee (Reference 024041).

: Not applicable.

: The authors declare that they have no competing interests.

Updates are available Correction dated 2019-10-28

Click to view Correction: https://doi.org/10.1186/s13063-019-3732-6