DTEBOP2: Bayesian Optimal Phase II Randomized Clinical Trial Design with
Delayed Outcomes
Implements a Bayesian Optimal Phase II design (DTE-BOP2) for trials with delayed treatment effects, particularly relevant to immunotherapy studies where treatment benefits may emerge after a delay. The method builds upon the BOP2 framework and incorporates uncertainty in the delay timepoint through a truncated gamma prior, informed by expert knowledge or default settings. Supports two-arm trial designs with functionality for sample size determination, interim and final analyses, and comprehensive simulation under various delay and design scenarios. Ensures rigorous type I and II error control while improving trial efficiency and power when the delay effect is present. A manuscript describing the methodology is under development and will be formally referenced upon publication.
| Version: | 1.0.3 | 
| Depends: | R (≥ 3.5.0) | 
| Imports: | truncdist, doParallel, foreach, parallel, invgamma | 
| Suggests: | knitr, rmarkdown, survRM2adapt, ggplot2, reconstructKM, survival, survminer | 
| Published: | 2025-05-09 | 
| DOI: | 10.32614/CRAN.package.DTEBOP2 | 
| Author: | Zhongheng Cai [aut, cre],
  Haitao Pan [aut] | 
| Maintainer: | Zhongheng Cai  <zhonghengcai123 at gmail.com> | 
| License: | GPL-3 | 
| NeedsCompilation: | no | 
| CRAN checks: | DTEBOP2 results | 
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