Frequencies for d_5_hos_c7_51 variable in hosp_rollup2552_96_1997 dataset :

d_5_hos_c7_ |
         51 |      Freq.     Percent        Cum.
------------+-----------------------------------
         10 |          1        0.02        0.02
        518 |          1        0.02        0.03
       1989 |          1        0.02        0.05
      12471 |          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