Frequencies for a_c1_9 variable in hosp_rollup2552_96_2011 dataset :

     a_c1_9 |      Freq.     Percent        Cum.
------------+-----------------------------------
       2995 |          1        3.45        3.45
       8017 |          2        6.90       10.34
      11613 |          1        3.45       13.79
      13777 |          1        3.45       17.24
      19363 |          1        3.45       20.69
      22327 |          1        3.45       24.14
      43403 |          1        3.45       27.59
      49566 |          1        3.45       31.03
          . |         20       68.97      100.00
------------+-----------------------------------
      Total |         29      100.00

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