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The Common Data Elements for cancer research: remarks on functions and structure.
1Center for Medical Informatics, Yale University School of Medicine, PO Box 208009, New Haven, CT 06520-8009, USA. Prakash.Nadkarni@yale.edu
Methods of Information in Medicine
|December 7, 2006
Summary
The National Cancer Institute's Common Data Elements (CDE) need improvements in content and structure for better cancer research data sharing. Recommendations include expert review and enhanced metadata for electronic forms.
Area of Science:
- Biomedical Informatics
- Cancer Research Data Standards
Background:
- The National Cancer Institute (NCI) developed Common Data Elements (CDE) to standardize cancer research data.
- CDE aims to improve data interchange and interoperability among research centers.
Purpose of the Study:
- To evaluate the structure and content of NCI's CDE for its intended purpose.
- To assess CDE's ability to prevent data errors and inconsistencies.
- To measure curation quality through automated content checks.
Main Methods:
- CDE content was downloaded from the NCI's CDE Browser and converted to a relational database.
- Evaluation focused on compatibility with the ISO/IEC 11179 metadata model.
- Assessment included controlled vocabulary support and suitability for NCI data collection forms.
Main Results:
- Identified content limitations: inconsistency, insufficient definitions, and redundancy.
- Structural limitations include the need for term/relationship support.
- Highlighted the need for metadata to represent electronic forms using CDEs.
Conclusions:
- The NCI Common Data Elements (CDE) initiative shows promise but requires significant enhancements.
- Recommendations include expert content review and integration with the NCI Thesaurus.
- Schema improvements are necessary for effective electronic data collection form support.
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