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      A Decade of Reversal: An Analysis of 146 Contradicted Medical Practices

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          Abstract

          To identify medical practices that offer no net benefits. We reviewed all original articles published in 10 years (2001-2010) in one high-impact journal. Articles were classified on the basis of whether they addressed a medical practice, whether they tested a new or existing therapy, and whether results were positive or negative. Articles were then classified as 1 of 4 types: replacement, when a new practice surpasses standard of care; back to the drawing board, when a new practice is no better than current practice; reaffirmation, when an existing practice is found to be better than a lesser standard; and reversal, when an existing practice is found to be no better than a lesser therapy. This study was conducted from August 1, 2011, through October 31, 2012. We reviewed 2044 original articles, 1344 of which concerned a medical practice. Of these, 981 articles (73.0%) examined a new medical practice, whereas 363 (27.0%) tested an established practice. A total of 947 studies (70.5%) had positive findings, whereas 397 (29.5%) reached a negative conclusion. A total of 756 articles addressing a medical practice constituted replacement, 165 were back to the drawing board, 146 were medical reversals, 138 were reaffirmations, and 139 were inconclusive. Of the 363 articles testing standard of care, 146 (40.2%) reversed that practice, whereas 138 (38.0%) reaffirmed it. The reversal of established medical practice is common and occurs across all classes of medical practice. This investigation sheds light on low-value practices and patterns of medical research. Published by Elsevier Inc.

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          Author and article information

          Journal
          Mayo Clinic Proceedings
          Mayo Clinic Proceedings
          Elsevier BV
          00256196
          August 2013
          August 2013
          : 88
          : 8
          : 790-798
          Article
          10.1016/j.mayocp.2013.05.012
          23871230
          809d118e-e41a-4622-b724-6c26226ee557
          © 2013

          https://www.elsevier.com/tdm/userlicense/1.0/

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