Writing & StyleStyle guide

DD Domain for Death Details in FDA Study Data

FDA’s June 2026 guide describes the DD (Death Details) domain for supplemental information collected when a death occurs and expects consistency with relevant AE-domain death variables.

Quick answer

Use DD for supplemental death details such as official cause of death, and keep the related AE outcome/death/end-date variables consistent with those details.

Key details

Core IssueFDA’s June 2026 guide describes the DD (Death Details) domain for supplemental information collected when a death occurs and expects consistency with relevant AE-domain death variables.
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Important caveats

Scope Boundary

This is current FDA technical-conformance guidance for electronic study-data submissions; recheck the current FDA guide, supported standards, Data Standards Catalog, and eCTD specifications before relying on version-sensitive requirements.

Further guidance

Content

The guide identifies DD as the supplemental death-details domain and specifically connects it to AEOUT, AESDTH, and AEENDTC/AEENDY consistency.

Purpose

Use DD for supplemental death details such as official cause of death, and keep the related AE outcome/death/end-date variables consistent with those details.

Sources and evidence

Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.

  1. Study Data Technical Conformance Guide - Technical Specifications Document (opens in a new tab)U.S. Food and Drug Administration · Current FDA technical specifications for standardized clinical and nonclinical study-data submissions, including reviewer guides, datasets and eCTD organization.

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