RItools: Randomization Inference Tools
RItools package implements useful functions for implementing
randomization inference based statistical tests. The package provides tools
for testing balance of observed covariates in observational studies using the
Ben B. Hansen and Jake Bowers (2008). Covariate balance in simple, stratified and clustered comparative studies. Statistical Science. 23(2):219--236.
See the online documentation for
xBalance for more details.
The package also provides outcome analysis of simple or block randomized
trials (or matched observational studies) based on user defined models and
test statistics. See the online documentation of
parameterizedRandomizationDistribution for more details.
RItools is available on CRAN:
> install.packages("RItools") > library("RItools")
Using a development version of RItools
These directions will install development version in a way that will not
overwrite an existing installation of
RItools from CRAN. You will will need to
know the name of the branch you wish to install.
master: The current released version of
RItoolsand a holding place for small bug changes.
randomization-distribution: Experimental work on outcome analysis using user defined models of effects and test statistics. This branch contains the tools necessary to compute estimated treatment effects, p-values, and confidence intervals (regions) using direct simulation from the randomization distribution implied by the design of the experiment (or using the exact randomization distribution if the number of possible ways for the treatment to be assigned is relatively small).
We recommend using
dev_mode from the
devtools package to install
in-development versions of the package so that you can keep the current CRAN
version as the primary package.
dev_mode creates a secondary library of packages which can
only be accessed while in
dev_mode. Packages normally installed can still be
used, but if different versions are installed normally and in
dev_mode version takes precedent if in
Install and load the
> install.packages("devtools") > library("devtools")
> dev_mode() d>
Note that the prompt changes from
d> to let you know you're in
dev_mode. Now choose the development branch you want to use. To install
or to install the
Either way, the package is then loaded in the usual fashion, provided
you're still in
Once you've done this you can disable
dev_mode as follows
d> dev_mode() >
The development version of the package remains loaded.
Note that if you load the package -- ie, enter
library(RItools) (when the package
hasn't already been loaded otherwise) -- while not in
then you'll get whatever version of the package may be installed in
your library tree, not this development version.
If you want to switch between versions of
RItools, we suggest re-starting R.