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Archived Comments for: A randomised controlled trial to assess the effectiveness of offering study results as an incentive to increase response rates to postal questionnaires [ISRCTN26118436]

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  1. Correction to typographical error in figure 1

    Sarah Cockayne, University of York

    18 October 2010

    Since the paper has been published the authors have noted that there is a typographical error in figure one. The words 'intervention' and 'control' have accidentally been put in the wrong box. It should read allocated to control (n=250) allocated to intervention (n=788).

    Competing interests

    None.

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