Frequencies for g2_c2_21 variable in hosp_rollup2552_96_2008 dataset :

   g2_c2_21 |      Freq.     Percent        Cum.
------------+-----------------------------------
    1820156 |          1        0.02        0.02
    2148364 |          1        0.02        0.03
    3029713 |          1        0.02        0.05
          . |      6,371       99.95      100.00
------------+-----------------------------------
      Total |      6,374      100.00

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