Modify Missing Substitution

Source: R/modify_missing_symbol.R

Specify how missing values will be represented in the printed table. By default, a blank space is printed for all NA values.

modify_missing_symbol(x, symbol, columns, rows)

Arguments

x

(gtsummary)
A gtsummary object

symbol

(string)
string indicating how missing values are formatted.

columns

(tidy-select)
columns to add missing symbol.

rows

(predicate expression)
Predicate expression to select rows in x$table_body. Review rows argument details.

Value

Updated gtsummary object

Examples

# Use the abbreivation "Ref." for reference rows instead of the em-dash
lm(marker ~ trt, data = trial) |>
  tbl_regression() |>
  modify_missing_symbol(
    symbol = "Ref.",
    columns = c(estimate, conf.low, conf.high),
    rows = reference_row == TRUE
  )



  
Characteristic
      Beta
      95% CI
      p-value
    
Chemotherapy Treatment





    Drug A
Ref.
Ref.

    Drug B
-0.20
-0.44, 0.05
0.12
Abbreviation: CI = Confidence Interval