Frequencies for d_4_ipf_c13_57 variable in prds_hosp10_yr2011 dataset :

d_4_ipf_c13 |
        _57 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          3        0.05        0.05
          3 |          2        0.03        0.08
          . |      6,145       99.92      100.00
------------+-----------------------------------
      Total |      6,150      100.00

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