Frequencies for d_4_hos_c2_57 variable in prds_hosp10_yr2011 dataset :

d_4_hos_c2_ |
         57 |      Freq.     Percent        Cum.
------------+-----------------------------------
       1026 |          1        0.02        0.02
      24955 |          1        0.02        0.03
      50073 |          1        0.02        0.05
      63272 |          1        0.02        0.07
          . |      6,146       99.93      100.00
------------+-----------------------------------
      Total |      6,150      100.00

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