Fig. 1.

Conceptual representation of query design in Duke Enterprise Data Unified Content Explorer (DEDUCE) Cohort Manager. ( A ) Strategy that uses a geo-spatially restricted subset of the Decision Support Repository (DSR). The Surveillance Period (identified by *) could be either monthly searches or a search covering the entire 2-year duration of the study. ( B ) Strategy that searches the full electronic medical record (EMR) to identify all patients with venous thromboembolism (VTE) diagnosed during the entire span of the study, with all addresses identified during the span of the study subsequently manually reviewed and correlated to the date of diagnosis with VTE.