Count Layer Class

Layer for categorical variable summaries including counts and percentages. Supports distinct subject counts and nested hierarchies.

Usage

CountLayer(
  target_var = character(0),
  by_vars = character(0),
  where = NULL,
  format_spec = NULL,
  label = NULL,
  metadata = list(),
  distinct_by = "USUBJID",
  include_pct = TRUE,
  denoms_by = character(0)
)

Arguments

target_var

Character vector of variable names to summarize

by_vars

Character vector of grouping variables

where

Filter expression (quosure or NULL)

format_spec

Format specification for output

label

Optional label for the layer

metadata

Additional metadata

distinct_by

Variable for distinct counting (default: USUBJID)

include_pct

Logical, include percentages

denoms_by

Variables to calculate denominators by

Value

A CountLayer object

Examples

layer <- CountLayer(
  target_var = "SEX",
  by_vars = "TRT01P",
  include_pct = TRUE
)