1 / 30

Subject Access: Medical Subject Headings (MeSH)

Subject Access: Medical Subject Headings (MeSH).

honey
Télécharger la présentation

Subject Access: Medical Subject Headings (MeSH)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Subject Access:Medical Subject Headings (MeSH) R. Campbell B. Durland A. Kussman D. Schmick J. Roberts K. Kloser C. Leckenby B. Robben S. Thornton Emporia State University

  2. What is MeSH? • The acronym created from Medical Subject Headings • An organized listing of words and phrases related to biomedical topics • A controlled vocabulary thesaurus created and maintained by the National Library of Medicine (NLM)

  3. MeSH is also • Used to index articles and to catalog items owned by the NLM • Used to search for biomedical information in: - PubMed/MEDLINE database of the NLM - Other databases of the NLM

  4. MeSH provides • Consistent terminology • Refined search terms • Terminology equivalent to the controlled vocabulary • Links to broader or narrower search terms • Weekly updates

  5. How is MeSH organized? • There are three basic types of records in MeSH - Headings or descriptors…over 25,000 - Subheadings or qualifiers - Supplementary Concept Records

  6. Searching with MeSH • Automated mapping - Other NLM databases - PubMed/MEDLINE • MeSH browser - More detailed searching - Obtain terms to use outside of NLM databases

  7. What is the MeSH Browser? • Part of the MeSH web pages, governed and updated by NLM • An online tool to determine the MeSH vocabulary • Search headings, subheadings or Supplementary Concepts • Does not link to any database retrieval system

  8. History of MeSH First published in 1954 as the Subject Heading Authority List Adapted from the Quarterly Cumulative Index Medicus (1940) and the Index Catalogue of the Library of the Surgeon General’s Office

  9. The Subject Heading Authority list was hierarchical, which exposed inefficiencies when searching for a subject • The system had subheadings that fell mostly within the headings they were contained in • For example: “Abnormalities” was a subheading under the general headings of organs, tissues, and regions, and “Anesthesia and Analgesia” would be a subheading under surgical procedures

  10. The creation of the Index Medicus, a bibliography that would be combined with the Subject Heading Authority List. The combination would be known as Medical Subject Headings (MeSH) A digitization project was in the works to allow a user to search the index on demand. 1960 – A Trailblazing Year

  11. MeSH – First Design (1960) Advantages • Subheadings reduced from 100 to 67 • Subheadings broader and classifiable under any practical header • Articles AND books were classified under this single authority list Disadvantages • An entry could only be assigned ONE subheading • That one subheading was as specific as an entry could be described • Example: If one were to classify a paper discussing the cause, diagnosis and treatment of Polycystic Kidney Disorder (PKD), the graphic illustrates how restrictive the descriptors would be

  12. MeSH Beyond 1960 • 1963 - first Medical Subject Headings List published - 13 main categories - 58 separate subheadings and main headings • Designed to be dynamic and evolving. Annual updates no longer done. - Updates done in an instant - overseen by the NLM under the NIH • The number of descriptors has expanded to classify new science-related discoveries: - 1960 – 4,400 descriptors - 1963 – 5,700 descriptors - 2010 – 25,588 descriptors

  13. Uses for MeSH

  14. Users in an Academic/Medical Library Researchers Medical Students Faculty Clinicians Patients

  15. MeSH in Many Languages BabelMeSH and PICOLinguist = Translation into 41 Languages incuding: Arabic French German Italian Portuguese Japanese Russian Finnish Dutch Spanish Slovene SwedishNorwegianTurkishChinese An interlingual database of MeSH translations http://babelmesh.nlm.nih.gov/ or http://babelmesh.nlm.nih.gov/pico.php

  16. The Health Information Prescription Program began in Iowa in 2003

  17. MeSH Uses in Hospital Libraries • How is it used? - Locate and identify medical information - The Librarian acts as an internal consultant when information is needed • Who uses it? - Clinicians - Patients and their family & friends - Hospital staff

  18. Uses in a Public Library • Librarian as information professional… on all topics? - Assist patrons on the different databases (PubMed, MEDLINE, LocatorPlus) - Anyone has use of these databases; there are free versions and versions that can be purchased

  19. Comparing MeSH and text-word searches in Medline • Why MEDLINE? • MeSH and text- word compliment each other

  20. Social Tagging: A Case Study • Why Social Tagging? • 46% of survey responders found MeSH a clear concept • 12% found MeSH “muddy”

  21. MeSH and PubMed • It’s in the details • Automated Term Mapping • It’s all relevant, just not in Pub Med

  22. But what does it all mean, Basil?

  23. Vocabulary Data Changes • - New Descriptors- 422 • - Changed Descriptors • - Deleted Descriptors • - New by Tree Subcategory • The Medical Subject Headings Section Staff continually revise and update the MeSH vocabulary • 11 Staff Members Changes to MeSH for 2010

  24. Filters on PubMed • Reduce the amount of articles retrieved • Specific characteristics • Single term filters • Further research is needed to determine value of filters

  25. PubMed and NCBI New and Noteworthy PubMed Homepage redesigned Auto Suggest button added to search box My NCBI My Bibliography

  26. The Future of MeSH • Programmers are combining MeSH with other qualifiers to ease find-ability of unpublished information. • Adaptations include improving search terms, changing the display of published information, and classifying information on the deep web.

  27. MeSH Spiderbots GENDOO GEOGLE SCIMINER CLEANEX

  28. The Future is in the Mother Ship • Centralized data application combining MeSH terms with data miners. • Focus on print and non-print sources. • Requires removal of contracts for Open Access.

  29. References Dillon, K. (January/February/March, 2004). "Health Information Prescription" Project Launched in Virginia. Retrieved October 26, 2009 from http://scholar.lib.vt.edu/ejournals/VALib/v50_n1/dillon.html Jenuwine, E., & Floyd, J. (2004). Comparison of medical subject headings and text-word searches in medline to retrieve studies on sleep in healthy individuals. Journal of Medical Library Association, 92(3), 349-353. Maggio, L., Bresnahan, M., Flynn, D., Harzbecker, J., & Blanchard, M., Ginn, D. (2009). A Case study: using social tagging to engage students in learning mesh. Journal Medical Library Association, 97(2), 77-83. With special thanks to Rhonda Altonen for answering questions. MeSH Subject Headings.What’s New. Retrieved October 16, 2009 from http://www.nlm.nih.gov/mesh/whatsnew.html National Center for Biotechnology Information. (January 13, 2009). PubMEd New and Noteworthy. Retrieved October 16, 2009 from http://www.ncbi.nlm.nih.gov/feed/rss.cgi?ChanKey=PubMedNews National Center for Biotechnology Information. (January 13, 2009). Databases. Retrieved October 18, 2009 from http://www.ncbi.nlm.nih.gov/Database/index.html National Library of Medicine. (December 15, 2008). Fact Sheet: Medical Subject Headings (MeSH). Retrieved September 12, 2009 from http://www.nlm.nih.gov/pubs/factsheets/mesh.html

  30. References con’t. National Library of Medicine. (December 22, 2006). Uses of MeSH in Online Retrieval. Retrieved September 12, 2009 from http://www.nlm.nih.gov/mesh/intro_retrieval2007.html National Library of Medicine. (November 20, 2001). An Interlingual Database of MeSH Translations. Retrieved September 30, 2009 from http://www.nlm.nih.gov/mesh/intlmesh.html National Library of Medicine, Mehnert, R. and Cravedi, K. The Health Information Prescription: Senator Tom Harkin Joins National Library of Medicine and American College of Physicians—American Society of Internal Medicine Foundation to Launch Patient Information Program. (April 2, 2003). Retrieved October 12, 2009 from http://www.nlm.nih.gov/news/press_releases/IAhealth RX03. html\ NIH. (July 11, 2006). Summary: NIH International Representatives Meeting. Retrieved September 30, 2009 from http://www.fic.nih.gov/programs/international/forum/2006/summary_jul2006.pdf United States National Library of Medicine. (September 1, 2009). MeSH Subject Headings. MeSH Record Types. Retrieved October 18, 2009 from http://www.nlm.nih.gov/mesh/intro_record_types.html United States National Library of Medicine. (September 1, 2009). Medical Subject Headings. MeSH Browser. Retrieved October 18, 2009 from http://www.nlm.nih.gov/mesh/mbinfo.html

More Related