gtsummary: add_p.tbl_cross – R documentation

Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!

add_p.tbl_cross

Adds p-value to crosstab table

Description

Calculate and add a p-value comparing the two variables in the cross table. Missing values are included in p-value calculations.

Usage

## S3 method for class 'tbl_cross'
add_p(x, test = NULL, pvalue_fun = NULL, source_note = NULL, ...)

Arguments

`x`	Object with class `tbl_cross` from the tbl_cross function
`test`	A string specifying statistical test to perform. Default is "`chisq.test`" when expected cell counts >=5 and "`fisher.test`" when expected cell counts <5.
`pvalue_fun`	Function to round and format p-value. Default is style_pvalue, except when `source_note = TRUE` when the default is `style_pvalue(x, prepend_p = TRUE)`
`source_note`	Logical value indicating whether to show p-value in the {gt} table source notes rather than a column.
`...`	Not used

Example Output

Example 1

Example 2

Author(s)

Karissa Whiting

Examples

# Example 1 ----------------------------------
add_p_cross_ex1 <-
  trial %>%
  tbl_cross(row = stage, col = trt) %>%
  add_p()

# Example 2 ----------------------------------
add_p_cross_ex2 <-
  trial %>%
  tbl_cross(row = stage, col = trt) %>%
  add_p(source_note = TRUE)

gtsummary

Presentation-Ready Data Summary and Analytic Result Tables

v1.4.0

MIT + file LICENSE

Authors

Daniel D. Sjoberg [aut, cre] (<https://orcid.org/0000-0003-0862-2018>), Michael Curry [aut] (<https://orcid.org/0000-0002-0261-4044>), Margie Hannum [aut] (<https://orcid.org/0000-0002-2953-0449>), Joseph Larmarange [aut] (<https://orcid.org/0000-0001-7097-700X>), Karissa Whiting [aut] (<https://orcid.org/0000-0002-4683-1868>), Emily C. Zabor [aut] (<https://orcid.org/0000-0002-1402-4498>), Esther Drill [ctb] (<https://orcid.org/0000-0002-3315-4538>), Jessica Flynn [ctb] (<https://orcid.org/0000-0001-8310-6684>), Jessica Lavery [ctb] (<https://orcid.org/0000-0002-2746-5647>), Stephanie Lobaugh [ctb], Gustavo Zapata Wainberg [ctb] (<https://orcid.org/0000-0002-2524-3637>)

Initial release