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End-point interpretation in clinical trials: the case for discipline
1University of Texas School of Public Health, Houston USA.
Controlled Clinical Trials
|February 23, 1999
Summary
High research standards in clinical trials are crucial for new drug applications. Investigators must clearly report prospective endpoints and error rates to protect public health.
Area of Science:
- Biostatistics
- Epidemiology
- Clinical Trial Design
Background:
- Discussions surrounding clinical trial conduct rules have intensified following a new drug application submission to the Food and Drug Administration (FDA).
- Key areas of focus include the regulatory importance of prospectively defined endpoints and the role of alpha-spending functions in clinical trials.
- Ensuring the highest research standards in statistical analyses is vital for sound public policy supporting new drug applications.
Purpose of the Study:
- To emphasize the critical need for rigorous statistical standards in clinical trials supporting new drug applications.
- To advocate for clear interpretation and reporting of type I and type II error rates by physician-scientists.
- To promote a regulatory approach that prioritizes the integrity of prospective study designs over post-hoc findings.
Main Methods:
- The abstract discusses the fundamental principles of epidemiology and biostatistics as the foundation for clinical trial research standards.
- It highlights the importance of prospective analysis plans and complete reporting of findings for predefined endpoints.
- The text advocates for a review process that first evaluates the study's original objectives and then considers exploratory findings.
Main Results:
- Physician-scientists have a responsibility to provide unambiguous interpretations of statistical error rates (type I and type II).
- Clear prospective statements of analysis plans and complete reporting of findings for prospectively defined endpoints are essential.
- Regulatory agencies and clinical trial professionals should reject the notion of prioritizing "sound methodology or a small p-value".
Conclusions:
- Regulatory agencies should prioritize judging the original intent and methodology of clinical trial investigations.
- A balanced approach is needed, evaluating prospective findings before considering exploratory results.
- Upholding high statistical and epidemiological standards in clinical trials is paramount for public health and patient safety.
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