The following table describes each column in the CTRP Dictionary v1.0 page:

Column in Main PageDescription
IDAn ID number arbitrarily assigned by the author of this wiki page, for maintenance purposes. It has no relevance in the NCI Clinical Trials API or in CTRP.
Data ElementData element name from the API, data warehouse (DW), or database (DB), in that order of preference.
API SchemaNumber for sorting, indicating the order of data elements in the API JSON schema.
API OutputNumber for sorting, indicating the order of data elements in the API JSON output, such as clinical-trial/NCT02194738.
TSRYes or No, indicating whether the data element is in the Trial Summary Report (TSR), as generated from CTRP.
DWYes or No, indicating whether the data element is in the data warehouse.
DBYes or No, indicating whether the data element is in the CTRP database for the Protocol Abstraction or Person/Organization web application.