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The function creates a cross table of categorical variables.

Usage

tbl_cross(
  data,
  row = 1L,
  col = 2L,
  label = NULL,
  statistic = ifelse(percent == "none", "{n}", "{n} ({p}%)"),
  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

(data.frame)
A data frame

row

(tidy-select)
Column name in data to be used for the rows of cross table. Default is the first column in data.

col

(tidy-select)
Column name in data to be used for the columns of cross table. Default is the second column in data.

label

(formula-list-selector)
Used to override default labels in summary table, e.g. list(age = "Age, years"). The default for each variable is the column label attribute, attr(., 'label'). If no label has been set, the column name is used.

statistic

(string)
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

(numeric/list/function)
Specifies the number of decimal places to round the summary statistics. This argument is passed to tbl_summary(digits = ~digits). 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

(string)
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

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

missing

(string)
Must be one of c("ifany", "no", "always").

missing_text

(string)
String indicating text shown on missing row. Default is "Unknown"

margin_text

(string)
Text to display for margin totals. Default is "Total"

Value

A tbl_cross object

Author

Karissa Whiting, Daniel D. Sjoberg

Examples

# Example 1 ----------------------------------
trial |>
  tbl_cross(row = trt, col = response) |>
  bold_labels()
Tumor Response Total
0 1 Unknown
Chemotherapy Treatment



    Drug A 67 28 3 98
    Drug B 65 33 4 102
Total 132 61 7 200
# Example 2 ---------------------------------- trial |> tbl_cross(row = stage, col = trt, percent = "cell") |> add_p() |> bold_labels()
Chemotherapy Treatment Total p-value1
Drug A Drug B
T Stage


0.9
    T1 28 (14%) 25 (13%) 53 (27%)
    T2 25 (13%) 29 (15%) 54 (27%)
    T3 22 (11%) 21 (11%) 43 (22%)
    T4 23 (12%) 27 (14%) 50 (25%)
Total 98 (49%) 102 (51%) 200 (100%)
1 Pearson’s Chi-squared test