Frequencies for d_4_hos_c6_39 variable in hosp_rollup2552_96_1997 dataset :

d_4_hos_c6_ |
         39 |      Freq.     Percent        Cum.
------------+-----------------------------------
       1670 |          1        0.02        0.02
      11248 |          1        0.02        0.03
      13132 |          1        0.02        0.05
     584822 |          1        0.02        0.06
          . |      6,311       99.94      100.00
------------+-----------------------------------
      Total |      6,315      100.00

by Jean Roth , jroth@nber.org , 5 Sep 2018