قارن الطرق

	تجربة سريرية متعددة المراكز من المرحلة الثالثة	تجربة سريرية عشوائية تكيفية
المجال	علم الأوبئة	علم الأوبئة
العائلة	Process / pipeline	Process / pipeline
سنة النشأة	1940s–1990s (formalized through ICH harmonization ~1990s)	Late 1990s–2000s (widespread adoption post-2010)
صاحب الطريقة	Codified through ICH E9 guideline (1998) and decades of regulatory practice (FDA, EMA)	Donald Berry and colleagues; formalized by FDA guidance in 2010 and 2019
النوع	Confirmatory interventional study design	Experimental clinical trial design
المصدر التأسيسي	Friedman, L. M., Furberg, C. D., DeMets, D. L., Reboussin, D. M., & Granger, C. B. (2015). Fundamentals of Clinical Trials (5th ed.). Springer. ISBN: 978-3319185385	Berry, D. A. (2006). Bayesian clinical trials. Nature Reviews Drug Discovery, 5(1), 27–36.
الأسماء البديلة	Phase III multicenter RCT, confirmatory multicenter trial, Phase 3 multicenter study, pivotal multicenter trial	adaptive RCT, adaptive trial design, response-adaptive randomization trial, adaptive clinical trial
ذات صلة	6	6
الملخص	A multicenter Phase III clinical trial is the definitive confirmatory study that tests whether a new intervention produces a clinically meaningful benefit over a comparator in a large, representative patient population enrolled at two or more independent research sites. It is the primary evidence basis for regulatory approval by agencies such as the FDA and EMA, combining the statistical power of large samples with the external validity gained from geographic and demographic diversity across sites.	An adaptive randomized clinical trial (adaptive RCT) is a prospective experimental study that uses pre-specified rules to modify one or more trial aspects — such as sample size, allocation ratios, or treatment arms — based on accumulating data collected during the trial itself, while maintaining statistical validity and integrity of the study.