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—In The Medical Literature article entitled "Us ers' Guides to the Medical Literature, IX: A Method for Grading Health Care Recommendations," published in the December 13,1995, issue of The Journal (1995;274:1800-1804), there is an error in an equation in Table 3 on page 1802. In the 30th line, the last part of the equation should read as follows:
Error in Equation.. JAMA. 1996;275(16):1232. doi:10.1001/jama.1996.03530400020032