Create Expansion Cell Containing a Data Table Based on Strata

Defines an expansion cell for a data.table row based on the the strata. Creates a data.table with metadata and filter conditions for each combination of strata levels.

Usage

define_expansion_cell_from_data(row, grouping_cols, data_col, col_prefix)

Arguments

row

A single row from a data table containing endpoint data.

grouping_cols

A character vector specifying the columns that point to the grouping variables in the data.

data_col

The name of the column that points to the ADaM dataset.

col_prefix

A prefix for the resulting columns, such as "prefix_filter" and "prefix_metadata".

Value

A nested data.table (double listed) to be inserted into a data table cell.