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Published on 03.08.12 in Vol 14, No 4 (2012): Jul-Aug

This paper is in the following e-collection/theme issue:

    Corrigenda and Addenda

    Correction: Development and Validation of Filters for the Retrieval of Studies of Clinical Examination From Medline

    1University of Kansas School of Medicine at Wichita, Department of Internal Medicine and Department of Preventive Medicine and Public Health, Wichita, KS, United States

    2Children’s Hospital of Pittsburgh of UPMC, General Academic Pediatrics, UPMC, Pittsburgh, PA, United States

    3Carnegie Mellon University, Department of Biology, Pittsburgh, PA, United States

    4McMaster University, Department of Clinical Epidemiology and Biostatistics, Hamilton, ON, Canada

    5University of Pittsburgh, Health Sciences Library System, Pittsburgh, PA, United States

    Corresponding Author:

    Robert Badgett, MD

    University of Kansas School of Medicine at Wichita

    Department of Internal Medicine and Department of Preventive Medicine and Public Health

    1010 N Kansas

    Wichita, KS, 67214-3199

    United States

    Phone: 1 316 293 2604

    Fax:1 316 293 1878


    The authors of the recent JMIR publication “Development and Validation of Filters for the Retrieval of Studies of Clinical Examination From Medline” (J Med Internet Res 2011;13(4):e82) [1] inadvertently misplaced a decimal point in the final row of Table 4 (Comparison of the performance of filters for clinical examination, diagnosis, and treatment). The precision of the original report of the Haynes 1994 filter should be 22% and not 0.22. This leads to the F-measure being 36 and the NNR being 4.5. In addition, the following line in the discussion is incorrect and has been removed: “In addition, our results are consistent with Haynes initial reports of locating trials in the early 1990s (19) before the National Library of Medicine collaborated with the Cochrane Collaboration and introduced 'randomized controlled trial' as a MeSH term (final row of Table 4)”.

    The data in Table 4 was compiled to support our recommendation that the National Library of Medicine should create a publication type for “diagnostic accuracy study” to label studies that quantify sensitivity and specificity for diagnosis. We regret the error, but do not believe it weakens our recommendation or alters the results of our study.

    The precision of the Haynes 1994 treatment filter was surprisingly high in their study and is due in part to the development and validation being limited to 10 high-impact journals [2]. Our study used 161 journals.

    The online version of the JMIR paper has been corrected together with publication of this correction notice. A corrected version has been submitted by the publisher to PubMed Central, but incorrect versions may persist on other sites.


    1. Shaikh N, Badgett RG, Pi M, Wilczynski NL, McKibbon KA, Ketchum AM, et al. Development and validation of filters for the retrieval of studies of clinical examination from Medline. J Med Internet Res 2011;13(4):e82 [FREE Full text] [CrossRef] [Medline]
    2. Haynes RB, Wilczynski N, McKibbon KA, Walker CJ, Sinclair JC. Developing optimal search strategies for detecting clinically sound studies in MEDLINE. J Am Med Inform Assoc 1994 Dec;1(6):447-458 [FREE Full text] [Medline]

    Edited by G Eysenbach; This is a non–peer-reviewed article. submitted 27.07.12; accepted 27.07.12; published 03.08.12

    ©Robert Badgett, Nader Shaikh, Mini Pi, Nancy L Wilczynski, K. Ann McKibbon, Andrea M. Ketchum, R. Brian Haynes. Originally published in the Journal of Medical Internet Research (, 03.08.2012.

    This is an open-access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on, as well as this copyright and license information must be included.