Frequencies for spec_ind variable in hcris2552_10_2013 dataset :

    special |
  indicator |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,141       98.29       98.29
          F |        107        1.71      100.00
------------+-----------------------------------
      Total |      6,248      100.00

by Jean Roth , jroth@nber.org , 23 Aug 2018