Appraisal of: Katchamart, W., Faulkner A, Feldman B,Tomlinson G, Bombardier C.. PubMed had a higher sensitivity than Ovid-MEDLINE in the search for systematic reviews. J Clin Epidemiol 2011;64: 805-807
The aim of this study was to compare the performance of Ovid-MEDLINE vs. PubMed for identifying randomized controlled trials of methotrexate (MTX) in patients with rheumatoid arthritis (RA). They measured the performance of each strategies for Ovid-MEDLINE and PubMed for a systematic review of MTX in RA. They found that PubMed retrieved more citations overall than Ovid-MEDLINE. Of 20 citations that met eligibility criteria for the review, Ovid-MEDLINE retrieved 17 (85%) and PubMed 18 (90%). The precision was 0.881% (NNR: 114) for Ovid-MEDLINE vs. 0.884% (NNR:113) for PubMed.