[posted as supplied by authors]

E-Table 1. PubMed translation of Ovid search strategies to retrieve systematic reviews from MEDLINE*

Ovid strategy	PubMed strategy
Most sensitive strategy
search:.tw. OR meta-analysis.mp,pt. OR review.pt. OR di.xs. OR associated.tw.	search*[Title/Abstract] OR meta analysis[Publication Type] OR meta-analysis[Title/Abstract] OR meta analysis[MeSH Terms] OR review[Publication Type] OR diagnosis[MeSH Subheading] OR associated[Title/Abstract]
Balanced strategy, sensitivity > specificity
Meta-analysis.mp,pt. OR review.pt. OR search:.tw.	Meta-analysis[Publication Type] OR meta-analysis[Title/Abstract] OR meta-analysis[MeSH Terms] OR review[Publication Type] OR search*[Title/Abstract]
Balanced strategy, specificity > sensitivity
Cochrane database of systematic reviews.jn. OR search.tw. OR meta-analysis.pt. OR MEDLINE.tw. OR systematic review.tw.	Cochrane Database Syst Rev [TA] OR search[Title/Abstract] OR meta-analysis[Publication Type] OR MEDLINE[Title/Abstract] OR (systematic[Title/Abstract] AND review[Title/Abstract])
Most specific strategy
MEDLINE.tw. OR systematic review.tw. OR meta-analysis.pt.	MEDLINE[Title/Abstract] OR (systematic[Title/Abstract] AND review[Title/Abstract]) OR meta-analysis[Publication Type]