Fig. 4From: Composite CDE: modeling composite relationships between common data elements for representing complex clinical dataCreation of a dictionary cCDE for a CRF. a The āElectrolyte Laboratory Testsā table on a clinical document is provided as an example tabular data-entry document to capture laboratory test results for sodium (Na+) and potassium (K+) along with two clinical evaluation attributes. b We constructed the āElectrolyte Laboratory Tests Dictionaryā table by extracting the relevant attributes from the CDEs defined in the āRecommended Labs for Strokeā from the NINDS CDE project. c The dictionary cCDE (DE:47571) consists of six aCDEs that include a variable aCDE (DE:43938) that relates the dictionary cCDE to the dictionary table in Fig. 4b. Two rules for clinical evaluation are presented (http://chmr2.snubi.org:8083/chmr/data_element_view.jsp?id=28445)Back to article page