A data frame of unique cause-of-death entries derived from the cleaned MCCD
data. Used by list_causes() for browsing and searching. Not used internally
by get_mccd(); cause filtering is done directly on the Parquet files.
A data frame of unique cause-of-death entries derived from the cleaned MCCD
data. Used by list_causes() for browsing and searching. Not used internally
by get_mccd(); cause filtering is done directly on the Parquet files.