Documents providing a description of the organization of data elements within ClinicalTrials.gov study records, crosswalks to application programming interface (API) fields, and other information are listed in the table below, along with links to available formats.
|Study Structure||Describes the organization of the data elements as API study fields within a in ClinicalTrials.gov study record.||Schema||XML||JSON|
|Data Element-to-API Field Crosswalks||List of ClinicalTrials.gov data elements and their corresponding API fields.||HTML|
|All Fields||Alphabetical list of all study fields that can contain text values.||Schema||XML||JSON|
|Statistics||Study Structure documentation annotated with statistics on the number of studies found, number of studies available, and other information for each study field.||Schema||XML||JSON|
|Study Record Example||Displays the contents of a single study record in the study structure format.||XML||JSON|