Checks if any of the listed formats in .formats are "auto", and replaces "auto" with
the correct implementation of format_auto for the given statistics, data, and variable.
apply_auto_formatting(.formats, x_stats, .df_row, .var)(named character or list)
formats for the statistics. See Details in analyze_vars for more
information on the "auto" setting.
(named list)
a named list of statistics where each element corresponds
to an element in .formats, with matching names.
(data.frame)
data frame across all of the columns for the given row split.
(string)
single variable name that is passed by rtables when requested
by a statistics function.