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Simple nomograms to calculate sample size in diagnostic studies
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  • Published on:
    Errors in the nomogram.

    In the top nomogram the CI curves are missed labelled, there are three of them with the value 0.1.

    In the bottom nomogram; the example line is drawn too low. It is showing the start point at 0.45 rather than the 0.55, thus it points to approximately 490 subjects instead of the 393 indicated in the example.

    Could you please correct these errors. Thank you. Patrick Laffey

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    Conflict of Interest:
    None declared.