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Reporting adverse events in randomized controlled trials

Jim Nuovo1, Curtis Sather

  • 1Department of Family and Community Medicine, University of California, Davis, Sacramento, CA 95817, USA. james.nuovo@ucdmc.ucdavis.edu

Pharmacoepidemiology and Drug Safety
|September 26, 2006
PubMed
Abstract

Insights

Reporting of adverse events in randomized controlled trials varies significantly. Authors and editors should improve consistency in detailing side effects to ensure patient safety and trial transparency.

Area of Science:

  • Clinical Trials
  • Medical Research
  • Pharmacovigilance

Background:

  • Reporting of adverse events in randomized controlled trials (RCTs) is crucial for assessing drug safety.
  • Inconsistent reporting practices may obscure potential risks and patient safety concerns.

Purpose of the Study:

  • To analyze and describe the methods used for reporting adverse events in published RCTs.
  • To identify variations in how adverse events are presented across major medical journals.

Main Methods:

  • A manual review of 521 eligible RCTs published between January 2000 and June 2003 in five high-impact medical journals.
  • Data extraction focused on the mention and location of adverse event information (abstract, methods, results, discussion, tables, figures) and dedicated subheadings.

Main Results:

  • Adverse events were mentioned in abstracts (63%), methods (73%), results (89%), and tables (48%).
  • A separate subheading for adverse events in the results section was present in only 46% of articles.
  • Significant variation was observed in reporting practices across journals and within different sections of the articles.

Conclusions:

  • There is considerable heterogeneity in the reporting of adverse events in RCTs.
  • Authors and journal editors should strive for greater consistency and clarity in presenting adverse event data.
  • Standardized reporting of adverse events is essential for comprehensive safety evaluation and informed clinical decision-making.

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