Display of Adverse Events in Clinical Study Report
ICH E3 section 12.2.2 provides for structured display of adverse events as part of the clinical study report safety evaluation. A summary display is distinct from patient-level adverse-event listings and from narratives of selected serious or otherwise significant cases.
ReviewedEvidence1 sourceSectionWriting & Style
Quick answer
The adverse-event display organizes event frequencies and treatment-group comparisons so reviewers can inspect the safety profile systematically.
Key details
Core IssueICH E3 section 12.2.2 provides for structured display of adverse events as part of the clinical study report safety evaluation.
Registerscholarly, professional, or research/report writing
Important caveats
Scope Boundary
A summary display is distinct from patient-level adverse-event listings and from narratives of selected serious or otherwise significant cases.
Further guidance
Content
Use clear categories, denominators, treatment groups, and event terminology consistent with the study’s safety analysis conventions.
Purpose
The adverse-event display organizes event frequencies and treatment-group comparisons so reviewers can inspect the safety profile systematically.
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.
ICH E3 section 12.3.3 calls for analysis and discussion across deaths, other serious adverse events, and other significant adverse events after the relevant case listings and narratives. This is an interpretive synthesis, not a duplicate death/serious-event listing or a replacement for individual patient narratives.
ICH E3 section 12.2.3 calls for analysis of adverse events beyond their tabular display, focusing on patterns important to safety interpretation. Do not treat the analysis as a substitute for the event display or patient-level listing, and do not imply causality beyond what the study evidence supports.
ICH E3 section 12.2.1 calls for a brief summary of adverse events within the safety evaluation before more detailed displays and analyses. Keep this section a high-level summary; it is not a substitute for detailed adverse-event displays, patient-level listings, serious-event treatment, or narratives.
ICH E3 section 12.3.1.3 distinguishes other significant adverse events from deaths and other serious adverse events for focused safety reporting. Do not merge this category with all adverse events, deaths, or other serious adverse events; ICH E3 gives these safety groupings separate reporting roles.
ICH E3 requires other serious adverse events to receive focused safety reporting, including patient-level listing and narrative treatment when needed to understand the event and its relationship to study treatment. ICH E3 distinguishes deaths from other serious adverse events for listing purposes; a fatal serious event may be referenced in both contexts, so counting and cross-references must remain clear.
ICH E3 places patient-level adverse-event listings in the report appendices and calls for listings that identify individual patients and relevant event details supporting review. A listing is not the same as a summary adverse-event table or a selected patient narrative; each serves a different level of safety reporting.
ICH E3 section 9.5.2 calls for discussion of the appropriateness, reliability, or relevance of measurements used to assess efficacy and safety when explanation is needed. This subsection justifies or qualifies measurement choices; it does not replace the section that defines the variables, methods, and timing of assessments.
ICH E3 section 9.8 calls for changes made after the study began to the conduct of the study or planned analyses to be described, including timing, reasons, decision process, responsibility, available data, and interpretive implications as applicable. This section is broader than a statistical-methods subsection: it covers material study-conduct changes as well as planned-analysis changes, while detailed statistical methods remain in their dedicated section.
