subject access: medical subject headings (mesh)

30
Subject Access: Medical Subject Headings (MeSH) R. Campbell B. Durland A. Kussman D. Schmick J. Roberts K. Kloser C. Leckenby B. Robben S.

Upload: honey

Post on 09-Feb-2016

56 views

Category:

Documents


1 download

DESCRIPTION

Subject Access: Medical Subject Headings (MeSH). - PowerPoint PPT Presentation

TRANSCRIPT

Page 1: Subject Access: Medical Subject Headings (MeSH)

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

Page 2: Subject Access: Medical Subject Headings (MeSH)

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)

Page 3: Subject Access: Medical Subject Headings (MeSH)

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

Page 4: Subject Access: Medical Subject Headings (MeSH)

MeSH provides

• Consistent terminology

• Refined search terms

• Terminology equivalent to the controlled vocabulary

• Links to broader or

narrower search terms

• Weekly updates

Page 5: Subject Access: Medical Subject Headings (MeSH)

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

Page 6: Subject Access: Medical Subject Headings (MeSH)

Searching with MeSH

• Automated mapping- Other NLM databases- PubMed/MEDLINE

• MeSH browser - More detailed searching- Obtain terms to use outside

of NLM databases

Page 7: Subject Access: Medical Subject Headings (MeSH)

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

Page 8: Subject Access: Medical Subject Headings (MeSH)

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

Page 9: Subject Access: Medical Subject Headings (MeSH)

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

Subject Heading Authority List (1954)

Organs

Abnormalities

Tissues

Abnormalities

Regions

Abnormalities

Surgical Procedures

Anesthesia

Page 10: Subject Access: Medical Subject Headings (MeSH)

1960 – A TRAILBLAZING YEAR

• 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.

Subject

Heading

Authority List

Index

Medicus

Medical Subject

Headings (MeSH)

Page 11: Subject Access: Medical Subject Headings (MeSH)

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

Cause(s) of PKD

• Classify under “Therapy”

Diagnosis

• Under the subheading “Etiology”

Treatment

• Couldn’t be classified

Page 12: Subject Access: Medical Subject Headings (MeSH)

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

Page 13: Subject Access: Medical Subject Headings (MeSH)

Uses for MeSH

Page 14: Subject Access: Medical Subject Headings (MeSH)

Users in an Academic/Medical Library

ResearchersMedical Students

FacultyCliniciansPatients

Page 15: Subject Access: Medical Subject Headings (MeSH)

MeSH in Many Languages

BabelMeSH and PICOLinguist =Translation into 41 Languages incuding:

Arabic French German Italian Portuguese Japanese

Russian Finnish Dutch Spanish Slovene Swedish Norwegian Turkish Chinese

An interlingual database of MeSH translationshttp://babelmesh.nlm.nih.gov/ or http://babelmesh.nlm.nih.gov/pico.php

Page 16: Subject Access: Medical Subject Headings (MeSH)

The Health Information Prescription Program began in Iowa in 2003

Page 17: Subject Access: Medical Subject Headings (MeSH)

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

Page 18: Subject Access: Medical Subject Headings (MeSH)

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

Page 19: Subject Access: Medical Subject Headings (MeSH)

Comparing MeSH and text-word searches in Medline

• Why MEDLINE?• MeSH and text- word compliment each other

Page 20: Subject Access: Medical Subject Headings (MeSH)

Social Tagging: A Case Study

• Why Social Tagging?• 46% of survey responders found MeSH a clear concept• 12% found MeSH “muddy”

Page 21: Subject Access: Medical Subject Headings (MeSH)

MeSH and PubMed

• It’s in the details

• Automated Term Mapping • It’s all relevant, just not in

Pub Med

Page 22: Subject Access: Medical Subject Headings (MeSH)

But what does it all mean, Basil?

Page 23: Subject Access: Medical Subject Headings (MeSH)

Changes to MeSH for 2010• 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

Page 24: Subject Access: Medical Subject Headings (MeSH)

Filters on PubMed

• Reduce the amount of articles retrieved

• Specific characteristics• Single term filters• Further research is needed to

determine value of filters

Page 25: Subject Access: Medical Subject Headings (MeSH)

PubMed and NCBI New and Noteworthy

• PubMed Homepage redesigned• Auto Suggest button added to search box• My NCBI My Bibliography

Page 26: Subject Access: Medical Subject Headings (MeSH)

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.

Page 27: Subject Access: Medical Subject Headings (MeSH)

MeSH Spiderbots

GEOGLE GENDOO

SCIMINERCLEANEX

Page 28: Subject Access: Medical Subject Headings (MeSH)

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.

Page 29: Subject Access: Medical Subject Headings (MeSH)

ReferencesDillon, 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

Page 30: Subject Access: Medical Subject Headings (MeSH)

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