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R-CMD-check CRAN status Codecov test coverage DOI:10.32614/RJ-2021-053

gtsummary

The {gtsummary} package provides an elegant and flexible way to create publication-ready analytical and summary tables using the R programming language. The {gtsummary} package summarizes data sets, regression models, and more, using sensible defaults with highly customizable capabilities.

By leveraging {broom}, {gt}, and {labelled} packages, {gtsummary} creates beautifully formatted, ready-to-share summary and result tables in a single line of R code!

Check out the examples below, review the vignettes for a detailed exploration of the output options, and view the gallery for various customization examples.

Installation

The {gtsummary} package was written as a companion to the {gt} package from RStudio. You can install {gtsummary} with the following code.

install.packages("gtsummary")

Install the development version with pak::pkg_install("ddsjoberg/gtsummary", dependencies = TRUE)

Examples

Summary Table

Use tbl_summary() to summarize a data frame.

animated

Example basic table:

library(gtsummary)

# summarize the data with our package
table1 <-
  trial |> 
  tbl_summary(include = c(age, grade, response))

There are many customization options to add information (like comparing groups) and format results (like bold labels) in your table. See the tbl_summary() tutorial for many more options, or below for one example.

table2 <-
  tbl_summary(
    trial,
    include = c(age, grade, response),
    by = trt, # split table by group
    missing = "no" # don't list missing data separately
  ) |> 
  add_n() |> # add column with total number of non-missing observations
  add_p() |> # test for a difference between groups
  modify_header(label = "**Variable**") |> # update the column header
  bold_labels()

Regression Models

Use tbl_regression() to easily and beautifully display regression model results in a table. See the tutorial for customization options.

mod1 <- glm(response ~ trt + age + grade, trial, family = binomial)

t1 <- tbl_regression(mod1, exponentiate = TRUE)

Side-by-side Regression Models

You can also present side-by-side regression model results using tbl_merge()

library(survival)

# build survival model table
t2 <-
  coxph(Surv(ttdeath, death) ~ trt + grade + age, trial) |> 
  tbl_regression(exponentiate = TRUE)

# merge tables
tbl_merge_ex1 <-
  tbl_merge(
    tbls = list(t1, t2),
    tab_spanner = c("**Tumor Response**", "**Time to Death**")
  )

Review even more output options in the table gallery.

gtsummary + R Markdown

The {gtsummary} package was written to be a companion to the {gt} package from RStudio. But not all output types are supported by the {gt} package. Therefore, we have made it possible to print {gtsummary} tables with various engines.

Review the gtsummary + R Markdown vignette for details.

Save Individual Tables

{gtsummary} tables can also be saved directly to file as an image, HTML, Word, RTF, and LaTeX file.

tbl |> 
  as_gt() |> 
  gt::gtsave(filename = ".") # use extensions .png, .html, .docx, .rtf, .tex, .ltx

Additional Resources

Cite gtsummary

> citation("gtsummary")

To cite gtsummary in publications use:

  Sjoberg DD, Whiting K, Curry M, Lavery JA, Larmarange J. Reproducible summary tables with the gtsummary package.
  The R Journal 2021;13:570–80. https://doi.org/10.32614/RJ-2021-053.

A BibTeX entry for LaTeX users is

  @Article{gtsummary,
    author = {Daniel D. Sjoberg and Karissa Whiting and Michael Curry and Jessica A. Lavery and Joseph Larmarange},
    title = {Reproducible Summary Tables with the gtsummary Package},
    journal = {{The R Journal}},
    year = {2021},
    url = {https://doi.org/10.32614/RJ-2021-053},
    doi = {10.32614/RJ-2021-053},
    volume = {13},
    issue = {1},
    pages = {570-580},
  }

Contributing

Big thank you to @jeffreybears for the hex sticker!

Please note that the {gtsummary} project is released with a Contributor Code of Conduct. By contributing to this project, you agree to abide by its terms. Thank you to all contributors!

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.
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