Frequencies for a_c6_60 variable in hosp_rollup2552_96_2011 dataset :

    a_c6_60 |      Freq.     Percent        Cum.
------------+-----------------------------------
    -484198 |          1        3.45        3.45
     -48450 |          1        3.45        6.90
      -2212 |          1        3.45       10.34
      -2169 |          2        6.90       17.24
          . |         24       82.76      100.00
------------+-----------------------------------
      Total |         29      100.00

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