Frequencies for d_4_hos_c2_68 variable in prds_hosp10_yr2016 dataset :

d_4_hos_c2_ |
         68 |      Freq.     Percent        Cum.
------------+-----------------------------------
        662 |          1        0.02        0.02
      18121 |          1        0.02        0.03
          . |      6,180       99.97      100.00
------------+-----------------------------------
      Total |      6,182      100.00

by Jean Roth , jroth@nber.org , 23 Aug 2018