Frequencies for d_4_hos_c4_52 variable in prds_hosp10_yr2015 dataset :

d_4_hos_c4_ |
         52 |      Freq.     Percent        Cum.
------------+-----------------------------------
         64 |          1        0.02        0.02
      13654 |          1        0.02        0.03
      39992 |          1        0.02        0.05
     576779 |          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