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	बेयसियन चरण I नैदानिक ​​परीक्षण	अनुकूली चरण I नैदानिक ​​परीक्षण
क्षेत्र	महामारी विज्ञान	महामारी विज्ञान
परिवार	Process / pipeline	Process / pipeline
उद्भव वर्ष	1990	1990 (model-based adaptive era); rule-based designs from the 1970s–1980s
प्रवर्तक	O'Quigley, Pepe & Fisher (Continual Reassessment Method)	O'Quigley, Pepe, and Fisher (CRM); earlier rule-based 3+3 designs pre-date it
प्रकार	Adaptive Bayesian dose-finding design	Adaptive clinical trial design
मौलिक स्रोत	O'Quigley, J., Pepe, M., & Fisher, L. (1990). Continual reassessment method: a practical design for phase 1 clinical trials in cancer. Biometrics, 46(1), 33–48.	O'Quigley, J., Pepe, M., & Fisher, L. (1990). Continual reassessment method: a practical design for phase 1 clinical trials in cancer. Biometrics, 46(1), 33–48.
उपनाम	Bayesian dose-finding trial, CRM trial, continual reassessment method trial, Bayesian dose-escalation study	adaptive dose-escalation trial, adaptive dose-finding study, model-based adaptive Phase I design
संबंधित	5	1
सारांश	A Bayesian Phase I clinical trial uses prior probability models and sequential Bayes updating to find the maximum tolerated dose (MTD) of a new agent. Unlike the traditional 3+3 rule-based escalation, the Bayesian approach revises a dose-toxicity curve continuously as each patient's outcome is observed, allowing faster convergence to the true MTD while minimising exposure of patients to unsafe or subtherapeutic doses.	An adaptive Phase I clinical trial is a first-in-human or early-phase dose-finding study that continuously updates the recommended dose after each patient cohort using a prespecified statistical model, rather than following a fixed rule. The goal is to identify the maximum tolerated dose (MTD) or the recommended Phase II dose (RP2D) efficiently while minimising exposure of participants to sub-therapeutic or toxic doses. Adaptive designs — most notably the Continual Reassessment Method (CRM) — replace or augment traditional rule-based designs such as the 3+3 schema.