hasi_bsa_to_ordinal     Converts BSA percentage to the ordinal scale
                        for HASI-R scoring.
hasi_r_num              Calculates the HASI-R score for each patient
                        and visit.
hiscr                   Calculates HiSCR scores given a percentage
                        parameter.
hs_pga_char             Converts HS-PGA numerical scores to character
                        values.
hs_pga_num              Calculates HS-PGA scores based on abscess,
                        draining fistula, and inflammatory nodule
                        counts.
ihs4_char               Converts IHS4 numerical scores to character
                        values.
ihs4_num                Calculates IHS4 scores based on abscess,
                        draining fistula, and inflammatory nodule
                        counts.
