A comparative study on concept representation between the UMLS and the clinical terms in Korean medical records.
The Unified Medical Language System (UMLS) is a rich source of knowledge in the biomedical domain. In this paper, we evaluated the coverage of UMLS as compared with Korean medical terms and identified differences in concept representation between two vocabulary sets. We measured the concept coverage by mapping clinical terms extracted from the discharge records of Seoul National University Hospital (SNUH) and the UMLS "Sign or Symptom" and "Disease or Syndrome" concepts. Thirty-five percent of the complaints in the SNUH were conceptually matched with the UMLS "Sign or Symptom" concept. Fifty-eight percent were found to be matched with the UMLS "Disease or Syndrome" concept rather than the "Sign or Symptom" concept. The remaining seven percent were not found in the UMLS concepts mapped above or those terms that used to special circumstances of a tertiary hospital in Korea. We then analyzed some of different expression patterns used by the two vocabulary sets and addressed issues to be taken into consideration.
Han
Seung-Bin
SB
Department of Biomedical Engineering, College of Medicine, Seoul National University, 28 Yongon-Dong Jongno-Gu, Seoul 110-799, Korea.
Kwak
Miyoung
M
Kim
Seunghee
S
Yoo
Sooyoung
S
Park
Heekyung
H
Kijoo
Jeun
J
Kim
Jeapil
J
Choi
Myoungsun
M
Choi
Jinwook
J
D006801:Humans; D007723:Korea; D016347:Medical Records Systems, Computerized; D009323:Natural Language Processing; D010351:Patient Discharge; D009626:Terminology as Topic; D017432:Unified Medical Language System; D018875:Vocabulary, Controlled