Methods and dimensions of electronic health record data quality assessment: enabling reuse for clinical research.
OBJECTIVE
To review the methods and dimensions of data quality assessment in the context of electronic health record (EHR) data reuse for research.


METHODS
A review of the clinical research literature discussing data quality assessment methodology for EHR data was performed. Using an iterative process, the aspects of data quality being measured were abstracted and categorized, as well as the methods of assessment used.


RESULTS
Five dimensions of data quality were identified, which are completeness, correctness, concordance, plausibility, and currency, and seven broad categories of data quality assessment methods: comparison with gold standards, data element agreement, data source agreement, distribution comparison, validity checks, log review, and element presence.


CONCLUSIONS
Examination of the methods by which clinical researchers have investigated the quality and suitability of EHR data for research shows that there are fundamental features of data quality, which may be difficult to measure, as well as proxy dimensions. Researchers interested in the reuse of EHR data for clinical research are recommended to consider the adoption of a consistent taxonomy of EHR data quality, to remain aware of the task-dependence of data quality, to integrate work on data quality assessment from other fields, and to adopt systematic, empirically driven, statistically based methods of data quality assessment.


CONCLUSIONS
There is currently little consistency or potential generalizability in the methods used to assess EHR data quality. If the reuse of EHR data for clinical research is to become accepted, researchers should adopt validated, systematic methods of EHR data quality assessment.
Department of Biomedical Informatics, Columbia University, New York, NY 10032, USA. nicole.weiskopf@dbmi.columbia.edu
Nicole Gray
NG
Weiskopf
Chunhua
C
Weng
D003625:Data Collection / Q000592:standards*; D057286:Electronic Health Records; D006801:Humans; D033181:Information Dissemination; D011786:Quality Control; D015203:Reproducibility of Results; D012107:Research Design