def patients_per(self, *columns: Set[str]):
    '\n        Counts distinct patients for unique values in the specified columns.\n        '
    return self._grouped_count(self.mrn_column.distinct(), *columns, label='patients')
Counts distinct patients for unique values in the specified columns.
def patients_per(self, *columns: Set[str]):
    '\n        \n        '
    return self._grouped_count(self.mrn_column.distinct(), *columns, label='patients')