h_default_if_empty

<a href="https://lifecycle.r-lib.org/articles/stages.html#stable"><img src="figures/lifecycle-stable.svg?package=crmPack&version=2.0.0" alt="[Stable]"></a>
A simple helper function that sets a default value for an empty or missing object,
that is an object for which <code><a href="/link/length()?package=crmPack&version=2.0.0" data-mini-rdoc="crmPack::length()">length()</a></code> function returns <code>0L</code> or it has length 1
and <code><a href="/link/is.na()?package=crmPack&version=2.0.0" data-mini-rdoc="crmPack::is.na()">is.na()</a></code> returns <code>TRUE</code>.

Implements a wide range of dose escalation
designs. The focus is on model-based designs, ranging from classical and
modern continual reassessment methods (CRMs) based on dose-limiting toxicity
endpoints to dual-endpoint designs taking into account a biomarker/efficacy
outcome. Bayesian inference is performed via MCMC sampling in JAGS, and it is easy
to setup a new design with custom JAGS code. However, it is also possible to
implement 3+3 designs for comparison or models with non-Bayesian estimation.
The whole package is written in a modular form in the S4 class system, making it
very flexible for adaptation to new models, escalation or stopping rules.
Further details are presented in
Sabanes Bove et al. (2019) <doi:10.18637/jss.v089.i10>.

Daniel Sabanes Bove

crmPack

Object-Oriented Implementation of Dose Escalation Designs

Wai Yin Yeung

Burak Kuersad Guenhan

Giuseppe Palermo

Thomas Jaki

Jiawen Zhu

Ziwei Liao

Dimitris Kontos

Marlene Schulte-Goebel

Doug Kelkhoff

Oliver Boix

Robert Adams

Clara Beck

John Kirkpatrick

Wojciech Wójciak

Guanya Peng

Prerana Chandratre

F. Hoffmann-La Roche AG 

Merck Healthcare KGaA 

Bayer AG 

RPACT GmbH 

h_default_if_empty function

<dl><dt>x</dt>
<dd>(<code>any</code>) an object to handle. It can be any object for which
<code><a href="/link/length()?package=crmPack&version=2.0.0" data-mini-rdoc="crmPack::length()">length()</a></code> function is defined.</dd>
<dt>default</dt>
<dd>(<code>any</code>) a default value for <code>x</code> object.</dd></dl>

Arguments

<a href='https://lifecycle.r-lib.org/articles/stages.html#stable'><img src='figures/lifecycle-stable.svg' alt='[Stable]' /></a>
A simple helper function that sets a default value for an empty or missing object,
that is an object for which <code><a href='https://rdrr.io/r/base/length.html'>length()</a></code> function returns <code>0L</code> or it has length 1
and <code><a href='https://rdrr.io/r/base/NA.html'>is.na()</a></code> returns <code>TRUE</code>.

Getting the default value for an empty object — h_default_if_empty

<dl>

<dt>x</dt>
<dd>(<code>any</code>) an object to handle. It can be any object for which
<code><a href='https://rdrr.io/r/base/length.html'>length()</a></code> function is defined.</dd>


<dt>default</dt>
<dd>(<code>any</code>) a default value for <code>x</code> object.</dd>

</dl>

Getting the default value for an empty object

h_default_if_empty: Getting the default value for an empty object

Description

Usage

Arguments

Examples