combine_groups {tern}

Reference and treatment group combination

Description

Facilitate the re-combination of groups divided as reference and treatment groups; it helps in arranging groups of columns in the rtables framework and teal modules.

Usage

combine_groups(fct, ref = NULL, collapse = "/")

Arguments

fct

(factor)
the variable with levels which needs to be grouped.

ref

(character)
the reference level(s).

collapse

(string)
a character string to separate fct and ref.

Value

A list with first item ref (reference) and second item trt (treatment).

Examples

groups <- combine_groups(
  fct = DM$ARM,
  ref = c("B: Placebo")
)

basic_table() %>%
  split_cols_by_groups("ARM", groups) %>%
  add_colcounts() %>%
  analyze_vars("AGE") %>%
  build_table(DM)