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ordcrm  

Likelihood-Based Continual Reassessment Method (CRM) Dose Finding Designs
View on CRAN: Click here


Download and install ordcrm package within the R console
Install from CRAN:
install.packages("ordcrm")

Install from Github:
library("remotes")
install_github("cran/ordcrm")

Install by package version:
library("remotes")
install_version("ordcrm", "1.0.0")



Attach the package and use:
library("ordcrm")
Maintained by
Emily V. Dressler
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2016-11-04
Latest Update: 2016-11-04
Description:
Provides the setup and calculations needed to run a likelihood-based continual reassessment method (CRM) dose finding trial and performs simulations to assess design performance under various scenarios. 3 dose finding designs are included in this package: ordinal proportional odds model (POM) CRM, ordinal continuation ratio (CR) model CRM, and the binary 2-parameter logistic model CRM. These functions allow customization of design characteristics to vary sample size, cohort sizes, target dose-limiting toxicity (DLT) rates, discrete or continuous dose levels, combining ordinal grades 0 and 1 into one category, and incorporate safety and/or stopping rules. For POM and CR model designs, ordinal toxicity grades are specified by common terminology criteria for adverse events (CTCAE) version 4.0. Function 'pseudodata' creates the necessary starting models for these 3 designs, and function 'nextdose' estimates the next dose to test in a cohort of patients for a target DLT rate. We also provide the function 'crmsimulations' to assess the performance of these 3 dose finding designs under various scenarios.
How to cite:
Emily V. Dressler (2016). ordcrm: Likelihood-Based Continual Reassessment Method (CRM) Dose Finding Designs. R package version 1.0.0, https://cran.r-project.org/web/packages/ordcrm. Accessed 13 Oct. 2026.
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Complete documentation for ordcrm
Functions, R codes and Examples using the ordcrm R package
Some associated functions: crmsimulations . nextdose . pseudodata . 
Some associated R codes: constraints.R . crmsimulations.R . fiterations.R . nextdose.R . pseudodata.R .  Full ordcrm package functions and examples
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