Add option to place "Unknown" row at the top or bottom for categorical and continuous2 summary types

[ddsjoberg]

This will be helpful because Roche often wants to report the number non missing at the top.

This would be included in either the brdg_() function or even a pier_*().

[ddsjoberg]

This would be a precursor to making it simpler to get a table like the one below that is common at Roche.

library(gtsummary)

trial |> 
  tbl_summary(
    include = c(response, grade, age), 
    type = list(c(response, grade) ~ "categorical", age ~ "continuous2"),
    missing = "always",
    missing_stat = "{N_nonmiss}",
    missing_text = "n"
  ) |> 
  modify_table_body(
    function(.x) .x |> 
      mutate(
        .by = variable,
        across(everything(), ~.[order(row_type != "label", row_type != "missing")])
      )
  ) |> 
  bold_labels() |> 
  as_kable()

Characteristic	N = 200
Tumor Response
n	193
0	132 (68%)
1	61 (32%)
Grade
n	200
I	68 (34%)
II	68 (34%)
III	64 (32%)
Age
n	189
Median (Q1, Q3)	47 (38, 57)

^{Created on 2024-09-05 with reprex v2.1.0}

[ddsjoberg]

Added a function to do this directly here: https://insightsengineering.github.io/crane/reference/tbl_demographics.html