방법 비교

	베이지안 2상 임상시험	베이지안 무작위 임상시험
분야	역학	역학
계열	Process / pipeline	Process / pipeline
기원 연도	1990s (Thall & Simon 1994; Berry 1985–2006)	1980s–2000s (formal methodology consolidated ~2004–2006)
창시자	Peter Thall, Richard Simon, Donald Berry (key contributors)	Donald A. Berry and David J. Spiegelhalter (applied Bayesian inference formally to RCT design)
유형	Interventional clinical trial design	Randomized experimental study with Bayesian inference
원전	Thall, P. F., & Simon, R. (1994). Practical Bayesian guidelines for phase IIB clinical trials. Biometrics, 50(2), 337–349.	Spiegelhalter, D. J., Abrams, K. R., & Myles, J. P. (2004). Bayesian Approaches to Clinical Trials and Health-Care Evaluation. Wiley. ISBN: 978-0471499756
별칭	Bayesian phase 2 trial, Bayesian single-arm phase II study, Bayesian early-phase efficacy trial, Bayes phase II	Bayesian RCT, Bayesian adaptive trial, Bayesian clinical trial design, BRCT
관련	6	5
요약	A Bayesian Phase II clinical trial applies Bayesian statistical inference to the standard Phase II objective of evaluating whether an experimental treatment shows sufficient early-phase efficacy to justify progression to a Phase III trial. By combining prior information with accumulating trial data, it enables principled interim monitoring, flexible stopping rules, and updated probability statements about treatment effect — all without the multiple-testing penalties that burden frequentist sequential designs.	A Bayesian randomized clinical trial (Bayesian RCT) combines the rigour of random treatment allocation with Bayesian statistical inference, allowing researchers to incorporate prior evidence and update beliefs continuously as trial data accumulate. Unlike the classical frequentist RCT, it yields direct probability statements about treatment effects and supports pre-specified adaptive stopping rules based on posterior probabilities.