Frequencies for a_c2_6920 variable in hosp_rollup2552_96_2004 dataset :

  a_c2_6920 |      Freq.     Percent        Cum.
------------+-----------------------------------
     316179 |          2        0.03        0.03
     418688 |          1        0.02        0.05
     519773 |          1        0.02        0.06
          . |      6,199       99.94      100.00
------------+-----------------------------------
      Total |      6,203      100.00

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