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Overview

The goal of library(arsenal) is to make statistical reporting easy. It includes many functions which the useR will find useful to have in his/her “arsenal” of functions. There are, at this time, 6 main functions, documented below. Each of these functions is motivated by a local SAS macro or procedure of similar functionality.

Note that arsenal v3.0.0 is not backwards compatible with previous versions (mainly because compare() got renamed to comparedf()). See the NEWS file for more details.

arsenal now has a pkgdown site: https://mayoverse.github.io/arsenal/

The tableby() Function

tableby() is a function to easily summarize a set of independent variables by one or more categorical variables. Optionally, an appropriate test is performed to test the distribution of the independent variables across the levels of the categorical variable. Options for this function are easily controlled using tableby.control().

The tableby() output is easily knitted in an Rmarkdown document or displayed in the command line using the summary() function. Other S3 methods are implemented for objects from tableby(), including print(), [, as.data.frame(), sort(), merge(), padjust(), head(), and tail().

The paired() Function

paired() is a function to easily summarize a set of independent variables across two time points. Optionally, an appropriate test is performed to test the distribution of the independent variables across the time points. Options for this function are easily controlled using paired.control().

The paired() output is easily knitted in an Rmarkdown document or displayed in the command line using the summary() function. It has the same S3 methods as tableby(), since it’s a special case of the tableby() object.

The modelsum() Function

modelsum() is a function to fit and summarize models for each independent variable with one or more response variables, with options to adjust for covariates for each model. Options for this function are easily controlled using modelsum.control().

The modelsum output is easily knitted in an Rmarkdown document or displayed in the command line using the summary() function. Other S3 methods are implemented for objects from modelsum(), including print(), [, as.data.frame(), and merge().

The freqlist() Function

freqlist() is a function to approximate the output from SAS’s PROC FREQ procedure when using the /list option of the TABLE statement. Options for this function are easily controlled using freq.control().

The freqlist() output is easily knitted in an Rmarkdown document or displayed in the command line using the summary() function. Other S3 methods are implemented for objects from freqlist(), including print(), [, as.data.frame(), sort(), and merge(). Additionally, the summary() output can be used with head() or tail().

The comparedf() Function

comparedf() compares two data.frames and reporting any differences between them, much like SAS’s PROC COMPARE procedure.

The comparedf() output is easily knitted in an Rmarkdown document or displayed in the command line using the summary() function. Other S3 methods are implemented for objects of class "comparedf", including print(), n.diffs(), n.diff.obs(), and diffs().

The write2*() Family of Functions

write2word(), write2pdf(), and write2html() are functions to output a table into a document, much like SAS’s ODS procedure. The S3 method behind them is write2(). There are methods implemented for tableby(), modelsum(), freqlist(), and comparedf(), and also methods for knitr::kable(), xtable::xtable(), and pander::pander_return(). Another option is to coerce an object using verbatim() to print out the results monospaced (as if they were in the terminal)–the default method does this automatically. To output multiple tables into a document, simply make a list of them and call the same function as before. A YAML header can be added using yaml(). Code chunks can be written using code.chunk().

For more information, see vignette("write2").

Other Notable Functions

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.