The comparative study on concept representation between the UMLS and the clinical terms in Korean medical records.
OBJECTIVE
The National Library of Medicine's Unified Medical Language System (UMLS) is a rich source of knowledge in the biomedical domain. The UMLS is used for research and development across wide range of different applications. In this paper, we evaluated the coverage of UMLS as compared with medical terms extracted from Korean medical records and identified differences in concept representation between two terminology sets.


METHODS
We measured the concept coverage of the UMLS. For this study, we mapped the clinical terms extracted from the discharge records of Seoul National University Hospital (SNUH) to the UMLS.


RESULTS
Thirty-five percent of the entry terms used in chief complaint of SNUH were conceptually matched with the UMLS 'Sign or Symptom' concepts. Fifty-eight percent of the terms were found to be matched with the UMLS 'Disease or Syndrome' concept rather than the 'Sign or Symptom' concept. The remaining 7% were not found in the UMLS concepts. We then analyzed some of different expression patterns used by the two term sets and addressed issues to be taken into consideration.


CONCLUSIONS
We found out that the UMLS was comparable with Korean medical records, since most of concepts of Korean medical records were covered with the UMLS concepts.
Han
Seung-Bin
SB
Department of Biomedical Engineering, College of Medicine, Seoul National University, 28 Yongon-Dong, Jongno-Gu, Seoul 110-799, Republic of Korea.
Choi
Jinwook
J
D006801:Humans; D007723:Korea; D008490:Medical Informatics / Q000379:methods*; D016347:Medical Records Systems, Computerized; D009626:Terminology as Topic; D017432:Unified Medical Language System