Frequencies for e_c_hos_c1_20 variable in hosp_rollup2552_96_1996 dataset :

e_c_hos_c1_ |
         20 |      Freq.     Percent        Cum.
------------+-----------------------------------
      31622 |          1        0.02        0.02
     693291 |          1        0.02        0.03
          . |      6,019       99.97      100.00
------------+-----------------------------------
      Total |      6,021      100.00

by Jean Roth , jroth@nber.org , 3 Sep 2018