Figure 2.

LC Data QUEST technical system architecture illustrating ETL and data quality management activities. At each practice, a standard set of EMR data elements are batched daily into a local repository. The repository supports generation of point-of-care decision support reports and quality improvement queries. Practitioners can identify errors in the EMR via the point-of-care reports and develop workflow processes to correct the data. This architecture repeats at each practice site. Site data can be semantically aligned and combined for health research.