Consult and apply the ORCHESTRA Code Data Set (OcDeC), a collection of common standardized variables used across ORCHESTRA cohorts.
To facilitate data exchange and integration across the ORCHESTRA studies, over 3,700 variables (including questions and answer options) from various case report forms were aligned with standard terminologies such as SNOMED CT, LOINC, NCIt, ATC, and ICD. To ensure semantic interoperability, a comprehensive mapping of these variables to their corresponding standard codes was created. The association between variables and standard codes was clearly indicated by incorporating the codes into the variable IDs. OcDeC represents a subset of these variables, along with their standard codes, that were common to at least two studies.