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Randomized trials stopped early for harm in HIV/AIDS: a systematic survey
Edward Mills1, Curtis Cooper, Ping Wu
1Centre for International Health and Human Rights Studies, North York, Ontario, Canada. emills@cihhrs.org
HIV Clinical Trials
|May 11, 2006
Summary
Randomized clinical trials (RCTs) stopped early for harm in HIV/AIDS research often lack clear stopping guidelines. This deficiency impacts the interpretation of trial results and highlights the need for improved transparency in decision-making.
Area of Science:
- Clinical Trials Methodology
- HIV/AIDS Research
- Drug Safety
Background:
- Decisions to halt clinical trials due to adverse effects involve complex statistical, logistical, and ethical factors.
- Evaluating the quality of methods used to inform early trial cessation for harm is crucial for scientific integrity.
Purpose of the Study:
- To determine the frequency of randomized clinical trials (RCTs) discontinued prematurely due to harmful effects within HIV/AIDS research.
- To assess the reporting quality of methodologies guiding decisions for early trial termination.
Main Methods:
- Systematic search of 11 electronic databases, conference abstracts, and internet sources.
- Identification and data extraction from RCTs stopped early for harm, focusing on reporting of methods, funding, sample size, interim analyses, stopping rules, and effect sizes.
Main Results:
- Ten RCTs stopped early for harm were identified; most involved antiviral drugs.
- Reporting of planned stopping guidelines was minimal (1 trial), with only five studies detailing a priori adverse events.
- Reported harm outcomes included toxicity, death, and increased mother-to-child transmission, with relative risks for harm ranging from 1 to 6.18.
Conclusions:
- The reporting of methods guiding early trial cessation for harm in HIV/AIDS research is inadequate, particularly regarding stopping guidelines.
- Clinicians should exercise caution when interpreting RCTs stopped early for harm, considering supplementary evidence.
- Researchers must enhance transparency in their decision-making processes for early trial termination due to adverse effects.
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