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Fig. 1 | BMC Medical Research Methodology

Fig. 1

From: Methodological tools and sensitivity analysis for assessing quality or risk of bias used in systematic reviews published in the high-impact anesthesiology journals

Fig. 1

The time trend of using quality/risk of bias tools in the analyzed articles. The three most commonly used quality/risk of bias tools in articles analyzed within this study were Cochrane, Jadad, and Oxford tools. The figure indicates that the usage of Cochrane’s tool is increasing, while the use of Jadad and Oxford tool is decreasing over time. Drop in the use of Cochrane’s tool for RoB assessment in year 2018 is explained by our inclusion criteria – unlike other analyzed years, we included only articles published in the first half of 2018

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