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dfpk

The dfpk R package provides an interface to fit Bayesian generalized (non-)linear mixed models using Stan, which is a C++ package for obtaining Bayesian inference using the No-U-turn sampler (see http://mc-stan.org/).

Description

dfpk package includes methods involving PK measures in the dose allocation process during a Phase I clinical trials. These methods enter PK in the dose finding designs in different ways, including covariates models, dependent variable or hierarchical models. This package provides functions to generate scenarios, and to run simulations which their objective is to determine the maximum tolerated dose (MTD) and to investigate PK of a drug or a combination of drugs.

Installation

Establish Version

dfpk will be soon on CRAN and can be installed and loaded via

install.packages("dfpk")
library(dfpk)

Development Version

To install the dfpk package from GitHub, first make sure that you can install the rstan package and C++ toolchain by following these instructions. The program Rtools (available on https://cran.r-project.org/bin/windows/Rtools/) comes with a C++ compiler for Windows. On OS-X, you should install Xcode. Once rstan is successfully installed, you can install dfpk from GitHub using the devtools package by executing the following in R:

if (!require(devtools)) {
  install.packages("devtools")
  library(devtools)
}

install_github("artemis-toumazi/dfpk")

If installation fails, please let us know by filing an issue.

Details on formula syntax, families and link functions, as well as prior distributions can be found on the help page of the dfpk function:

help(dfpk)

FAQ

Can I avoid compiling models?

Unfortunately, fitting your model with dfpk, there is currently no way to avoid the compilation.

What is the best way to ask a question or propose a new feature?

You can either open an issue on github or write me an email to (artemis.toumazi@gmail.com).

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Version

Install

install.packages('dfpk')

Monthly Downloads

47

Version

1.0

License

GPL (>= 3)

Issues

Pull Requests

Stars

Forks

Maintainer

Artemis Toumazi

Last Published

August 10th, 2016

Functions in dfpk (1.0)

AUC_estim

Estimation of the area under the curve, AUC.
pk.estim

PK measure of exposure
nsim

More than one simulation using PK measure in the dose finding design
dfpk-package

A Bayesian Dose-Finding Design using Pharmacokinetics(PK) for Phase I Clinical Trials.
pkcov

Dose finding method PKCOV
pkcrm

Dose finding method PKCRM
pkpop

Dose finding method PKPOP
dtox

Dose finding method DTOX
invlogit

Inverse logistic functions
pktox

Dose finding method PKTOX
scenarios

Generate New Scenarios
plotDose,dosefinding-method

The graphical representation of dose escalation for each patient in the trial.
plotConc,scen-method

The graphical representation of the drug's concentration in the plasma at time t after the drug administration.
plotConc

The generic function of plot.conc
show-methods

S4 Methods for Function show
plotDose

The generic function of the plot.dose
sim

One simulation using PK measure in the dose finding design.
stan_f

The data stan_f includes all the Stan models that dfpk package uses.