Frequencies for a8_c2_18 variable in hosp_rollup2552_96_2011 dataset :

   a8_c2_18 |      Freq.     Percent        Cum.
------------+-----------------------------------
      -2093 |          1        3.45        3.45
      -1280 |          1        3.45        6.90
       -781 |          1        3.45       10.34
          . |         26       89.66      100.00
------------+-----------------------------------
      Total |         29      100.00

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