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Correction to: 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?

Trials volume 20, Article number: 611 (2019) Cite this article

The Original Article was published on 13 September 2019

Correction to: Trials (2019) 20: 566

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

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

The range of correlations should read “0.4 to 0.6” instead of “0.4 to -0.6” in the phrase “There is a general consistency in the correlations between the repeated PROMs, with the majority 31 being in the range of 0.4 to 0.6.”

The original article has been corrected.

Reference

  1. Walters SJ, et al. 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? Trials. 2019;20:566. https://doi.org/10.1186/s13063-019-3671-2.

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Authors and Affiliations

  1. School of Health and Related Research (ScHARR), University of Sheffield, 30 Regent Street, Sheffield, S1 4DA, UK

    Stephen J. Walters, Richard M. Jacques, Inês Bonacho dos Anjos Henriques-Cadby, Jane Candlish, Nikki Totton & Mica Teo Shu Xian

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  1. Stephen J. Walters
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  2. Richard M. Jacques
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  3. Inês Bonacho dos Anjos Henriques-Cadby
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  4. Jane Candlish
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  5. Nikki Totton
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  6. Mica Teo Shu Xian
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Corresponding author

Correspondence to Stephen J. Walters.

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Walters, S.J., Jacques, R.M., dos Anjos Henriques-Cadby, I.B. et al. Correction to: 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?. Trials 20, 611 (2019). https://doi.org/10.1186/s13063-019-3732-6

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  • DOI: https://doi.org/10.1186/s13063-019-3732-6

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