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First published April 24, 2008 as JAMIA PrePrint; doi:10.1197/jamia.M2599
Journal of the American Medical Informatics Association 2008
© 2008 American Medical Informatics Association
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Submitted on August 20, 2007
Accepted on February 8, 2008

Consumer Health Concepts that do not Map to the UMLS: Where Do They Fit?

Alla Keselman PhD, MA1*, Catherine Arnott Smith PhD2, Guy Divita MS3, Hyeoneui Kim PhD4, Allen C. Browne MA5, Gondy Leroy PhD6, and Qing Zeng-Treitler PhD4

Affiliation of the authors: 1 Lister Hill National Center for Biomedical Communications, National Library of Medicine, National Institutes of Health, Bethesda, MD; Aquilent, Inc., Laurel, MD ; 2 School of Library and Information Studies, University of Wisconsin, Madison, WI ; 3 Lister Hill National Center for Biomedical Communications, National Library of Medicine, National Institutes of Health, Bethesda, MD; Lockheed Martin, Inc., Bethesda, MD ; 4 Decision Systems Group, Brigham and Women's Hospital, Harvard Medical School, Boston, MA ; 5 Lister Hill National Center for Biomedical Communications, National Library of Medicine, National Institutes of Health, Bethesda, MD ; 6 School of Information Systems and Technology, Claremont Graduate University, Claremont, CA

* To whom correspondence should be addressed.

Objective This study has two objectives: first, to identify and characterize consumer health terms not found in the Unified Medical Language System (UMLS) Metathesaurus (2007 AB); second, to describe the procedure for creating new concepts in the process of building a consumer health vocabulary. How do the unmapped consumer health concepts relate to the existing UMLS concepts? What is the place of these new concepts in professional medical discourse?

Design The consumer health terms were extracted from two large corpora derived in the process of Open Access Collaboratory Consumer Health Vocabulary (OAC CHV) building. Terms that could not be mapped to existing UMLS concepts via machine and manual methods prompted creation of new concepts, which were then ascribed semantic types, related to existing UMLS concepts, and coded according to specified criteria.

Results This approach identified 64 unmapped concepts, 17 of which were labeled as uniquely "lay" and not feasible for inclusion in professional health terminologies. The remaining terms constituted potential candidates for inclusion in professional vocabularies, or could be constructed by post-coordinating existing UMLS terms. The relationship between new and existing concepts differed depending on the corpora from which they were extracted.

Conclusion Non-mapping concepts constitute a small proportion of consumer health terms, but a proportion that is likely to affect the process of consumer health vocabulary building. We have identified a novel approach for identifying such concepts.






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