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Title: PubMed had a higher sensitivity than Ovid-MEDLINE in the search for systematic reviews
Authors: Wanruchada Katchamart
Amy Faulkner
Brian Feldman
George Tomlinson
Claire Bombardier
University of Toronto
Mahidol University
University Health Network University of Toronto
Hospital for Sick Children University of Toronto
Toronto General Research Institute University of Toronto
Keywords: Medicine
Issue Date: 1-Jul-2011
Citation: Journal of Clinical Epidemiology. Vol.64, No.7 (2011), 805-807
Abstract: Objective: To compare the performance of Ovid-MEDLINE vs. PubMed for identifying randomized controlled trials of methotrexate (MTX) in patients with rheumatoid arthritis (RA). Study Design and Setting: We created search strategies for Ovid-MEDLINE and PubMed for a systematic review of MTX in RA. Their performance was evaluated using sensitivity, precision, and number needed to read (NNR). Results: Comparing searches in Ovid-MEDLINE vs. PubMed, PubMed retrieved more citations overall than Ovid-MEDLINE; however, of the 20 citations that met eligibility criteria for the review, Ovid-MEDLINE retrieved 17 and PubMed 18. The sensitivity was 85% for Ovid-MEDLINE vs. 90% for PubMed, whereas the precision and NNR were comparable (precision: 0.881% for Ovid-MEDLINE vs. 0.884% for PubMed and NNR: 114 for Ovid-MEDLINE vs. 113 for PubMed). Conclusion: In systematic reviews of RA, PubMed has higher sensitivity than Ovid-MEDLINE with comparable precision and NNR. This study highlights the importance of well-designed database-specific search strategies. © 2011 Elsevier Inc. All rights reserved.
ISSN: 18785921
Appears in Collections:Scopus 2011-2015

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