Using Embase as a supplement to PubMed in Cochrane reviews differed across fields.

作者：T. Frandsen, M. Eriksen, D. G. Hammer, J. B. Christensen, J. Wallin · 发表于：Journal of Clinical Epidemiology · 年份：2020 · DOI：10.1016/j.jclinepi.2020.12.022 · 被引用次数：39 · 研究领域：Medicine

OBJECTIVE Medline/PubMed is often first choice for health science researchers when doing literature searches. However, Medline/PubMed does not cover the health science research literature equally well across specialties. Embase is often considered an important supplement to Medline/PubMed in health sciences. The present study analyses the coverage of Embase as a supplement to PubMed, and the aim of the study is to investigate if searching Embase can compensate for low PubMed retrieval. STUDY DESIGN AND SETTING The population in this study is all the included studies in all Cochrane reviews from 2012 to 2016 across the 53 Cochrane groups. The analyses were performed using two units of analysis (study and publication). We are examining the coverage in Embase of publications and studies not covered by PubMed (25,119 publications and 9,420 studies). RESULTS The results showed that using Embase as a supplement to PubMed resulted in a coverage of 66,994 publications out of 86,167 and a coverage rate of 77.7, 95% CI [75.05, 80.45] of all the included publications. Embase combined with PubMed covered 48,326 out of 54,901 studies and thus had a coverage rate of 88.0%, 95% CI [86.2, 89.9] of studies. The results also showed that supplementing PubMed with Embase increased coverage of included publications by 6.8 percentage points and the coverage of studies increased by 5.5 percentage points. Substantial differences were found across and within review groups over time. CONCLUSION ...