Correction to: Trials (2019) 20: 566
https://doi.org/10.1186/s13063-019-3671-2
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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.
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