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SNOMED CT: utility for a general medical evaluation template
Steven H Brown1, Peter L Elkin, Brent A Bauer
1Department of Veterans Affairs, Nashville, TN, USA.
AMIA ... Annual Symposium Proceedings. AMIA Symposium
|January 24, 2007
Summary
SNOMED CT shows promise for representing medical evaluation data, but is less effective for interface terms. Further evaluation is needed for its use in clinical systems.
Area of Science:
- Medical Informatics
- Clinical Terminology Standards
- Health Data Representation
Background:
- The U.S. government has licensed SNOMED CT for broad evaluation and use.
- A general medical evaluation template from the Department of Veterans Affairs was assessed.
- SNOMED CT's capability to represent interface objects and data concepts was evaluated.
Purpose of the Study:
- To evaluate SNOMED CT's effectiveness in representing terms and concepts within a specific medical evaluation template.
- To assess SNOMED CT's performance as both a reference and interface terminology.
Main Methods:
- 1573 expressions from the evaluation template were mapped to SNOMED CT.
- Compositional expressions were used to represent 1171 concepts.
- Double independent reviews and semantic analysis of a subset were conducted.
Main Results:
- SNOMED CT achieved 63.8% sensitivity as a reference terminology, varying by section (29.3% for history, 92.4% for exams).
- Sensitivity as an interface terminology was 55.0%.
- 80% of linking semantics were present in a subset analysis.
Conclusions:
- SNOMED CT is a promising terminology for knowledge representation in large medical evaluations.
- Its performance as an interface terminology was suboptimal, indicating areas for improvement.
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