Frequencies for d_4_hos_c6_56 variable in hosp_rollup2552_96_1997 dataset :

d_4_hos_c6_ |
         56 |      Freq.     Percent        Cum.
------------+-----------------------------------
    2509708 |          1        0.02        0.02
    5194228 |          1        0.02        0.03
    6620466 |          1        0.02        0.05
    7238617 |          1        0.02        0.06
   2.25e+07 |          1        0.02        0.08
          . |      6,310       99.92      100.00
------------+-----------------------------------
      Total |      6,315      100.00

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