Frequencies for a_c1_27 variable in hosp_rollup2552_96_2011 dataset :

    a_c1_27 |      Freq.     Percent        Cum.
------------+-----------------------------------
     181264 |          1        3.45        3.45
     405133 |          1        3.45        6.90
     482024 |          1        3.45       10.34
          . |         26       89.66      100.00
------------+-----------------------------------
      Total |         29      100.00

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