Frequencies for d_4_hos_c6_54 variable in hosp_rollup2552_96_1997 dataset :

d_4_hos_c6_ |
         54 |      Freq.     Percent        Cum.
------------+-----------------------------------
      26098 |          1        0.02        0.02
      26279 |          1        0.02        0.03
     170765 |          1        0.02        0.05
          . |      6,312       99.95      100.00
------------+-----------------------------------
      Total |      6,315      100.00

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