Frequencies for a_c6_92 variable in hosp_rollup2552_96_2010 dataset :

    a_c6_92 |      Freq.     Percent        Cum.
------------+-----------------------------------
    -451255 |          1        0.02        0.02
    -160823 |          1        0.02        0.05
     -13299 |          2        0.05        0.10
      -1672 |          1        0.02        0.12
     377818 |          1        0.02        0.15
          . |      3,999       99.85      100.00
------------+-----------------------------------
      Total |      4,005      100.00

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