Comparing the EMA and FDA on Statistical Significance in Pivotal Studies
When conducting pivotal clinical trials, both the EMA and FDA share the requirement for statistical significance (p-value < 0.05), but their approaches diverge in several ways.
While the FDA is more flexible—especially in cases of unmet medical needs, rare diseases, or innovative trial designs—the EMA often demands a higher level of statistical rigor and robust evidence to support clinical relevance.
1) P-value Threshold: Both agencies require p-values below 0.05 for significance, but the EMA tends to emphasize clinical relevance more stringently.
2) Multiplicity Adjustments: Both agencies require adjustments when multiple endpoints are tested, but the EMA applies stricter scrutiny to ensure robustness in single pivotal studies.
3) Confidence Intervals: The EMA typically demands narrower confidence intervals to ensure the treatment effect is precisely estimated, while the FDA may balance precision with the urgency of providing treatment.
4) Real-World Evidence: The FDA has been more open to accepting real-world evidence and innovative trial designs, while the EMA remains cautious, often requiring more validation through traditional methods.
Both regulatory bodies ensure that statistically significant results translate into meaningful improvements for patients, but their paths to approval reflect differing levels of flexibility.
References:
European Medicines Agency. Guideline on the Investigation of Subgroups in Confirmatory Clinical Trials. Available at: https://lnkd.in/gWfpx3y8
U.S. Food and Drug Administration. Various Statistical Considerations for Clinical Trials. Available at: https://lnkd.in/gMg3acuM
Also, please don't forget to peruse this insightful journal; Wang, X., & Ji, X. (2020). Sample size estimation in clinical research: from randomized controlled trials to observational studies. Chest, 158(1), S12-S20.
#ClinicalTrials #CRO #StatisticalAnalysis #Power #Type1Error #Type2Error #CNRResearch
Program Coordinator | Innovation and Entrepreneurship Advocate | Social Impact Leader
1wCongratulations BridgeBio. So, you have submitted the application through the centralized authorization procedure?