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MEDLINE® 2019 Database Guide
Ovid MEDLINE® covers the international literature on biomedicine, including the allied health fields and the biological and physical sciences, humanities, and information science as they relate to medicine and health care. Information is indexed from approximately 5,600 journals published world-wide. Records start in the early 1800's and go all the way to our daily updates.
Ovid MEDLINE® is produced by the National Library of Medicine.
Non MEDLINE Status Records
The Ovid MEDLINE® database contains records with the following possible status besides MEDLINE: Publisher, In-Data-Review, In-Process and PubMed-not-MEDLINE records from NLM.
The Publisher records have recently been added to PubMed via electronic submission from a publisher, and are soon to proceed to the next stage, In-Process. This tag is also on citations received before late 2003 if they are from journals not indexed for MEDLINE, or from a journal that was accepted for MEDLINE after the citations' publication date. These citations bibliographic data have not been reviewed.
The In-Data-Review records have been submitted to NLM electronically by the publisher, and the journal title, date of publication and volume/issue (source data) are being checked.
The In-Process records are undergoing a citation level review; i.e., the author names, article title, and pagination are being checked.
The PubMed-not-MEDLINE records have undergone quality review but are not assigned MeSH headings because the cited item is not in scope for MEDLINE either by topic or by date of publication, or is from a non-MEDLINE journal. These records are constantly changing. PubMed-not-MEDLINE records will not be added to the Medline database.
Ovid receives records from NLM on a daily basis, however we are dependent upon NLM's update schedule.
Segments and Years of Coverage
The following Ovid MEDLINE segments are available to online users. Contact your local administrator to add or remove segments.
Name Description Years of Coverage
MED1 Ovid MEDLINE® 1946 to 1979
MED2 Ovid MEDLINE® 1980 to 1987
MED3 Ovid MEDLINE® 1988 to 1995
MED4 Ovid MEDLINE® 1996 to 2003
MED5 Ovid MEDLINE® 2004 to 2007
MED6 Ovid MEDLINE® 2008 to 2009
MED7 Ovid MEDLINE® 2010 to 2011
MED8 Ovid MEDLINE® 2012
MED9 Ovid MEDLINE® 2013
MED10 Ovid MEDLINE® 2014
MED11 Ovid MEDLINE® 2015
MED12 Ovid MEDLINE® 2016
MED13 Ovid MEDLINE® 2017 to 2018
MEDALL Ovid MEDLINE® ALL 1946 to Daily Update
MDFC Ovid MEDLINE® 1996 to Present with Weekly Update
MDXC Ovid MEDLINE® 1996 to Present with Daily & Weekly Update
MEDB Ovid MEDLINE® without Revisions 1946 to 1995
MEDC Ovid MEDLINE® Revisions September 2019
MEDC1 Ovid MEDLINE® Revisions December 2018 to April 2019
MEDC2 Ovid MEDLINE® Revisions May 2019
MEDC3 Ovid MEDLINE® Revisions June 2019 to August 2019
MEDCM Ovid MEDLINE® Revisions December 2018 to June 2019
MEDF Ovid MEDLINE® without Revisions 1996 to Present with Weekly Update
MEDL Ovid MEDLINE® January 2019 to Weekly Update
MEDP Ovid MEDLINE® Epub Ahead of Print Updated Daily
MEDV Ovid MEDLINE® Versions All Versions with Weekly Update
MEDW Ovid MEDLINE® 2015 to Weekly Update
MEDX Ovid MEDLINE® without Revisions 1996 to Present with Daily Update
MESD Ovid MEDLINE® 1946 to Present with Daily Update
MESX Ovid MEDLINE® Updated Daily
MESZ Ovid MEDLINE® 1946 to Present with Weekly Update
MEZZ Ovid MEDLINE® without Revisions 1946 to Present with Weekly Update
OMES Ovid MEDLINE® 1946 to Present with Daily Update
OMME Ovid MEDLINE® 1946 to Present with Weekly Update
PMED Ovid MEDLINE® Practice Database 2000
PMEZ Ovid MEDLINE® and In-Process & Other Non-Indexed Citations and Daily 1946 to Present
PMFC
Ovid MEDLINE® and In-Process & Other Non-Indexed Citations
1996 to Daily Update
PMOZ Ovid MEDLINE® and In-Process & Other Non-Indexed Citations and Daily 1946 to Present
POMM Ovid MEDLINE® and In-Process & Other Non-Indexed Citations 1946 to Present
PPEM Ovid MEDLINE® Epub Ahead of Print and In-Process & Other Non-Indexed Citations Updated Daily
PPEZ Ovid MEDLINE® and Epub Ahead of Print, In-Process & Other Non-Indexed Citations and Daily 1946 to Present
PPEZV Ovid MEDLINE® and Epub Ahead of Print, In-Process & Other Non-Indexed Citations, Daily and Versions® 1946 to Present with Daily & Weekly Update
PPFC Ovid MEDLINE® and Epub Ahead of Print, In-Process & Other Non-Indexed Citations 1996 to Daily Update
PPFF Ovid MEDLINE® and Epub Ahead of Print, In-Process & Other Non-Indexed Citations without Revisions 1996 to Present with Daily & Weekly Update
PPMC Ovid MEDLINE® and Epub Ahead of Print, In-Process & Other Non-Indexed Citations and Daily 2015 to Present
PPMW Ovid MEDLINE® and Epub Ahead of Print, In-Process & Other Non-Indexed Citations and Daily - without Revisions 2015 to Present
PPMZ Ovid MEDLINE® and Epub Ahead of Print, In-Process & Other Non-Indexed Citations 1946 to Present
PREM Ovid MEDLINE® In-Process & Other Non-Indexed Citations 2019 to Present
PREM1 Ovid MEDLINE® In-Process & Other Non-Indexed Citations 1946 to 2016
PREM2 Ovid MEDLINE® In-Process & Other Non-Indexed Citations 2017 to 2018
PREW Ovid MEDLINE® In-Process & Other Non-Indexed Citations 1946 to Present
PRMF Ovid MEDLINE® and In-Process & Other Non-Indexed Citations without Revisions 1996 to Present with Daily & Weekly Update
PRMZ Ovid MEDLINE® and In-Process & Other Non-Indexed Citations 1946 to Present
The limit of databases that you can select for a multifile search session is based upon database segments rather than actual databases. The Ovid multifile segment limit is set at 120 to avoid impacting your search sessions. This database includes 24 segments.
This database is updated online daily, weekly and monthly.
