Figure 1
From: A European inventory of common electronic health record data elements for clinical trial feasibility
Main steps of the iterative approach to create the data inventory. A list of data elements (DI (previous iteration)) is extended by data elements of simplified eligibility criteria. The availability of data elements from the extended list (Preliminary DI) then get validated through data exports (DE) at the sites, which afterwards get analyzed. Data elements which are hardly used or not available at the sites get removed from the DI and are added to the wish list. The remaining elements form a new version of the Data Inventory (DI (new version)).