Frequencies for d_4_irf_c13_53 variable in prds_hosp10_yr2011 dataset :

d_4_irf_c13 |
        _53 |      Freq.     Percent        Cum.
------------+-----------------------------------
         18 |          1        0.02        0.02
          . |      6,149       99.98      100.00
------------+-----------------------------------
      Total |      6,150      100.00

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