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Archived Comments for: Septin 9 methylated DNA is a sensitive and specific blood test for colorectal cancer

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  1. Correction of typographical error in statistical methods

    Karen Heichman, ARUP Laboratories, Inc.

    19 January 2012

    Following publication of this article, we noticed a significant typographical error in the statistical section that needs to be corrected. Please note that specificity of the test was determined according to the following formula:

    Specificity = 1 - false-positives/total controls

    The same results are obtained if the following formula is used:

    Specificity = true negatives/total controls

    Competing interests

    The authors have no competing interests.