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Preventive misconception: its nature, presence, and ethical implications for research
Alan E Simon1, Albert W Wu, Philip W Lavori
1National Center for Health Statistics, Centers for Disease Control and Prevention, Hyattsville, Maryland, USA.
American Journal of Preventive Medicine
|May 5, 2007
Summary
Participants in prevention trials may misunderstand their personal protection, a phenomenon called preventive misconception. This overestimation of benefits poses ethical challenges in research involving preventive interventions.
Area of Science:
- Medical Ethics
- Clinical Trial Design
- Participant Understanding
Background:
- Ethical considerations in prevention trials require further exploration.
- Preventive misconception (PM) is defined as participants overestimating personal protection from trial enrollment.
- This study addresses the under-examined ethical aspects of prevention research.
Purpose of the Study:
- To define the concept of preventive misconception (PM).
- To empirically demonstrate the existence of PM in prevention trials.
- To highlight the ethical implications of PM in research.
Main Methods:
- Developed a rating tool to assess PM.
- Utilized data from a nationwide study on informed consent quality in a shingles vaccine trial.
- Evaluated 50 participant responses by two pairs of raters for PM presence and type, assessing inter-rater reliability.
Main Results:
- 32% of participants showed evidence of preventive misconception (PM).
- 12% underestimated their probability of receiving a placebo.
- 24% overestimated the personal effectiveness of the experimental intervention.
Conclusions:
- The study introduces and validates the concept of preventive misconception.
- Empirical evidence confirms PM exists in prevention trials.
- Participant overestimation of protection in prevention trials presents ethical challenges.
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