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National Library of Medicine Technical BulletinNational Library of Medicine Technical Bulletin

Table of Contents: 2019 MARCH–APRIL No. 427

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Support for Systematic Reviews

Support for Systematic Reviews. NLM Tech Bull. 2019 Mar-Apr(427):b6.

2019 March 14 [posted]

The National Library of Medicine (NLM) recently added new terminology about systematic reviews to the Medical Subject Headings (MeSH). In addition, the PubMed search filter for systematic reviews has been updated. To learn more about these and related changes to MeSH, MEDLINE, and PubMed, please see:

  • "2019 MeSH Highlights": In this webinar, presented in January 2019, NLM explained the changes in MeSH for 2019, including the introduction of the publication type "Systematic Review" and subject heading "Systematic Reviews as Topic." A recording of the webinar is available at
  • MEDLINE Data Changes—2019: In this article, we detailed the MEDLINE data changes implemented with the 2019 MeSH. We added the publication type "Systematic Review" retrospectively to appropriate existing MEDLINE citations. With this re-indexing, you can retrieve all MEDLINE citations for systematic reviews and identify systematic reviews with high precision.
  • PubMed Updates February 2019: NLM updated the search strategy for the Systematic Reviews filter to focus retrieval on citations to systematic reviews. The Systematic Reviews filter was originally introduced in PubMed in 2002 (New PubMed Filter: Systematic Reviews).
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