• J M Budd, M Sievert, and T R Schultz.
• School of Information Science and Learning Technologies, University of Missouri-Columbia, 65211, USA. libsjmb@showme.missouri.edu
• JAMA. 1998 Jul 15;280(3):296-7.

ContextThis study examined the impact of retracted articles on biomedical communication.ObjectiveTo examine publications identified in the biomedical literature as having been retracted, to ascertain why and by whom the publications were retracted and to what extent citations of later-retracted articles continue to be incorporated in subsequent work.DesignA search of MEDLINE from 1966 through August 1997 for articles that had been retracted.Main Outcome MeasuresCharacteristics of retractions and citations to articles after retraction.ResultsA total of 235 articles had been retracted. Error was acknowledged in relation to 91 articles; results could not be replicated in 38; misconduct was evident in 86; and no clear reason was given in 20. Of the 235 articles, 190 were retracted by some or all of the authors; 45 were retracted by a person or organization other than the author(s). The 235 retracted articles were cited 2034 times after the retraction notice. Examination of 299 of those citations reveals that in only 19 instances was the retraction noted; the remaining 280 citations treated the retracted article either explicitly (n = 17) or implicitly (n = 263) as though it were valid research.ConclusionRetracted articles continue to be cited as valid work in the biomedical literature after publication of the retraction; these citations signal potential problems for biomedical science.

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