Frequencies for a_c6_49 variable in hosp_rollup2552_96_2011 dataset :

    a_c6_49 |      Freq.     Percent        Cum.
------------+-----------------------------------
     -63614 |          1        3.45        3.45
      -7401 |          1        3.45        6.90
      -1111 |          1        3.45       10.34
       -600 |          1        3.45       13.79
          . |         25       86.21      100.00
------------+-----------------------------------
      Total |         29      100.00

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