Frequencies for d_4_hos_c2_66 variable in prds_hosp10_yr2010 dataset :

d_4_hos_c2_ |
         66 |      Freq.     Percent        Cum.
------------+-----------------------------------
        410 |          1        0.04        0.04
       6095 |          1        0.04        0.09
      11019 |          1        0.04        0.13
      11569 |          1        0.04        0.17
      19543 |          1        0.04        0.22
          . |      2,318       99.78      100.00
------------+-----------------------------------
      Total |      2,323      100.00

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