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Title: The Methodological Quality Score of COVID-19 Systematic Reviews is Low, Except for Cochrane Reviews: A Meta-epidemiological Study
Authors: Kataoka, Yuki
Oide, Shiho
Ariie, Takashi
Tsujimoto, Yasushi
Furukawa, Toshi A.
Author's alias: 片岡, 裕貴
古川, 壽亮
Keywords: preprints
systematic review
methodological quality
Issue Date: 2021
Publisher: Society for Clinical Epidemiology
Journal title: Annals of Clinical Epidemiology
Volume: 3
Issue: 2
Start page: 46
End page: 55
Abstract: BACKGROUND: The objective of this study was to investigate the methodological quality of coronavirus disease 2019 (COVID-19) systematic reviews (SRs) indexed in medRxiv and PubMed, compared with Cochrane COVID Reviews. METHODS: This is a cross-sectional meta-epidemiological study. We searched medRxiv, PubMed, and Cochrane Database of Systematic Reviews for SRs of COVID-19. We evaluated the methodological quality using A MeaSurement Tool to Assess systematic Reviews (AMSTAR) checklists. The maximum AMSTAR score is 11, and minimum is 0. Higher score means better quality. RESULTS: We included 9 Cochrane reviews as well as randomly selected 100 non-Cochrane reviews in medRxiv and PubMed. Compared with Cochrane reviews (mean 9.33, standard deviation 1.32), the mean AMSTAR scores of the articles in medRxiv were lower (mean difference (MD): −2.85, 98.3% confidence intervals (CI): −0.96 to −4.74), and those in PubMed were also lower (MD: −3.28, 98.3%CI: −1.40 to −5.15), with no difference between the latter two. CONCLUSIONS: Readers should pay attention to the potentially low methodological quality of SRs related to COVID-19 in both PubMed and medRxiv. Evidence users might be better to search the Cochrane Library rather than medRxiv or PubMed to search SRs related to COVID-19.
Rights: © 2021 Society for Clinical Epidemiology
This article is licensed under a Creative Commons [Attribution-NonCommercial-NoDerivatives 4.0 International] license.
DOI(Published Version): 10.37737/ace.3.2_46
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