Frequencies for d_4_hos_c2_64 variable in prds_hosp10_yr2013 dataset :

d_4_hos_c2_ |
         64 |      Freq.     Percent        Cum.
------------+-----------------------------------
       2633 |          1        0.02        0.02
       3443 |          1        0.02        0.03
       8258 |          1        0.02        0.05
      13679 |          1        0.02        0.06
          . |      6,244       99.94      100.00
------------+-----------------------------------
      Total |      6,248      100.00

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