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General issues in efficacy, equivalency, and superiority trials: clinical considerations
1University of Pennsylvania, School of Dental Medicine, Philadelphia.
Journal of Periodontal Research
|July 1, 1992
Summary
Designing periodontal disease clinical trials requires considering disease prevalence and severity for accurate therapeutic effect detection. Focus on clinical changes, not just etiologic factors, for statistically and clinically significant results.
Area of Science:
- Periodontology
- Clinical Trial Design
- Biostatistics
Background:
- Clinical trials for periodontal diseases necessitate accounting for disease prevalence and varying descriptors.
- Patient selection for initial screening should prioritize high-severity cases to enhance detection of therapeutic effects.
Discussion:
- Therapeutic interventions must be assessed via actual clinical changes, emphasizing clinical and statistical significance over presumed etiologic factors.
- The site-specific distribution of periodontal disease (1 to >100 sites) requires strategies to link tooth surface measurements with subject-based data.
Key Insights:
- High-severity patient selection maximizes therapeutic effect detection in early-stage periodontal trials.
- Evaluating therapies based on observed clinical changes ensures relevance and significance.
Outlook:
- Future trials can utilize more representative subject groups after initial high-severity screening.
- Developing methods to correlate site-based and subject-based data is crucial for comprehensive periodontal disease assessment.