Frequencies for d_4_hos_c7_46 variable in hosp_rollup2552_96_2010 dataset :

d_4_hos_c7_ |
         46 |      Freq.     Percent        Cum.
------------+-----------------------------------
       1665 |          1        0.02        0.02
       2021 |          1        0.02        0.05
      21657 |          2        0.05        0.10
          . |      4,001       99.90      100.00
------------+-----------------------------------
      Total |      4,005      100.00

by Jean Roth , jroth@nber.org , 21 Apr 2018