Create a cross table of summary statistics

Source: R/tbl_cross.R

The function creates a cross table of two categorical variables.

tbl_cross(
  data,
  row = NULL,
  col = NULL,
  label = NULL,
  statistic = NULL,
  digits = NULL,
  percent = c("none", "column", "row", "cell"),
  margin = c("column", "row"),
  missing = c("ifany", "always", "no"),
  missing_text = "Unknown",
  margin_text = "Total"
)

Arguments

data

A data frame

row

A column name in data= to be used for the rows of cross table.

col

A column name in data= to be used for the columns of cross table.

label

List of formulas specifying variables labels, e.g. list(age ~ "Age", stage ~ "Path T Stage"). If a variable's label is not specified here, the label attribute (attr(data$age, "label")) is used. If attribute label is NULL, the variable name will be used.

statistic

A string with the statistic name in curly brackets to be replaced with the numeric statistic (see glue::glue). The default is {n}. If percent argument is "column", "row", or "cell", default is "{n} ({p}%)".

digits

Specifies the number of decimal places to round the summary statistics. By default integers are shown to the zero decimal places, and percentages are formatted with style_percent(). If you would like to modify either of these, pass a vector of integers indicating the number of decimal places to round the statistics. For example, if the statistic being calculated is "{n} ({p}%)" and you want the percent rounded to 2 decimal places use digits = c(0, 2). User may also pass a styling function: digits = style_sigfig

percent

Indicates the type of percentage to return. Must be one of "none", "column", "row", or "cell". Default is "cell" when {N} or {p} is used in statistic.

margin

Indicates which margins to add to the table. Default is c("row", "column"). Use margin = NULL to suppress both row and column margins.

missing

Indicates whether to include counts of NA values in the table. Allowed values are "no" (never display NA values), "ifany" (only display if any NA values), and "always" (includes NA count row for all variables). Default is "ifany".

missing_text

String to display for count of missing observations. Default is "Unknown".

margin_text

Text to display for margin totals. Default is "Total"

Value

A tbl_cross object

Example Output

Example 1

image of rendered example table

Example 2

image of rendered example table

See also

Review list, formula, and selector syntax used throughout gtsummary

Other tbl_cross tools: add_p.tbl_cross(), inline_text.tbl_cross()

Author

Karissa Whiting, Daniel D. Sjoberg

Examples

# \donttest{
# Example 1 ----------------------------------
tbl_cross_ex1 <-
  trial %>%
  tbl_cross(row = trt, col = response) %>%
  bold_labels()

# Example 2 ----------------------------------
tbl_cross_ex2 <-
  trial %>%
  tbl_cross(row = stage, col = trt, percent = "cell") %>%
  add_p() %>%
  bold_labels()
# }