The National Library of Medicine and its databases Lívia Vasas, PhD vasas.livia@semmelweis-univ.hu 2016

Abbreviations NIH: National Institutes of Health NLM: National Library of Medicine: NCBI: National Center for Biotechnology Information MeSH: Medical Subject Heading PMC: PubMed Central AID: Article Identifier DOI: Digital Object Identifier ISSN: International Standard Serial Number NCBI a division of NLM at NIH More info: NCBI Handbook http://www.ncbi.nlm.nih.gov/books/NBK143764/ .

MEDLINE – Definition History The MEDLINE database is the electronic counterpart of Index Medicus®, Index to Dental Literature, and the International Nursing Index, taken care by NLM. MEDLINE is the most used medical bibliographic database.

MEDLINE -1964 a database with bibliographic records from journal articles More than 25 million records from 5600 journals (medical, dentistry, nursing, health care,  medical history journals, Online books are being indexed The MEDLINE records contain Medical Subject Headings (MeSH) Most of the citations are from English-language journals and include abstracts.

https://webmeeting. nih. gov/p6fgwlim1sd/ https://webmeeting.nih.gov/p6fgwlim1sd/?launcher=false&fcsContent=true&pbMode=normal

More valuable data in MEDLINE records https://www. nlm. nih MeSH terms Publication types Substance name Controlled bibliographic data

PubMed - basic search

Search results - Display settings

Sign in – register for an account (since 2005) from Mozilla Do not use special characters at registration (– á Ö . : ; *) Detailed search question can be saved: „Save search” E-mail notification if there are new records for a search „Manage Filters” settings will remain (can customize your own filter Useful records can be put into Collections

Filters Manage Filters ….. Properties - Subsets: MEDLINE records http://nnlm.gov/ntc/2015/04/06/pubmed-display-changes-citation-status-tags/ Create custom filter „in process”,

Author information My NCBI – NCBI Site Preferencies – Author Information - On

PubMed possibilities Show additional filters Send to, Save search Advanced search Results by year, by relevance PMC images search for Titles with your search terms free full-text articles in PubMed Central Eurpean PCM Search details Recent activities PubMed Commons etc

Advances Search

Advances Search

Collections ….

Starting at MESH

Other Searching possibilities

Clinical Queries

PMC PubMed Central 3,3 M full text articles

PMC - PubMed Central

PubMed Central - PMC

PMC –licensz kérdések https://creativecommons.org/about/license

This search is still not a good search…. Analize the result to find more relevant keywords– rethink the search process Special attention to the publication types…

http://www. slideshare http://www.slideshare.net/featherr/how-to-conduct-a-systematic-search-10966748?related=1

A proper search Match the question to the source (PubMed, PMC, other database …) Develop a search strategy Step by step (MeSH, free words, filters, etc)

Type of publications

Clinical trial

Own database from the useful records

2013 – PubMed Commons

http://www.ncbi.nlm.nih.gov/gquery/

PubMed Central - PMC

MedlinePlus – for everybody http://www. nlm. nih

http://www.merriam-webster.com/medlineplus/klinefelter

Questions MEDLINE contains less records than PubMed. False True The DOI number: 10.1167/iovs.13-13562 The article has an author called Szel A . True True

Questions The Cardiology main MESH term, subheading „trends” will result how much „clinical trial” type publications? 100-150 10-20 250-300 doi: 10.1161/CIRCULATIONAHA.114.013338 Type of the publication: Review article letter 0-10 editorial

Questions The correct DOI number of the article which has Vasas and Berhidi as authors, and was published in 2013 is: 10.1556/.2013.29653 10.1556/OH….29653 10.1556/OH.2013.29653

Questions Child diseased with Ebola. Start the search in MESH. How much review type publications about it in PubMed? 100-200 50-100 20-50 0-10

Thank you for you attention!