Research synthesis methods
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Comparative Study
Comparison of information sources used in Cochrane and non-Cochrane systematic reviews: A case study in the field of anesthesiology and pain.
It has been reported that information sources searched in systematic reviews (SRs) are insufficiently comprehensive. We analyzed information sources used in SRs, as well as how up-to-date were the searches. ⋯ SRs in the field of anesthesiology and pain often neglect to search all possible information sources, particularly in NCSRs. Cochrane reviews had more comprehensive searching and shorter search to publication time.