Frequencies for d_4_ipf_c11_63 variable in prds_hosp10_yr2015 dataset :

d_4_ipf_c11 |
        _63 |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |          2        0.03        0.03
          4 |          1        0.02        0.05
         18 |          1        0.02        0.06
          . |      6,254       99.94      100.00
------------+-----------------------------------
      Total |      6,258      100.00

by Jean Roth , jroth@nber.org , 24 Aug 2018