Frequencies for c_1_c7_04000 variable in hcris2552_96_1995 dataset :

c_1_c7_0400 |
          0 |      Freq.     Percent        Cum.
------------+-----------------------------------
     172203 |          1       50.00       50.00
     797267 |          1       50.00      100.00
------------+-----------------------------------
      Total |          2      100.00

by Jean Roth , jroth@nber.org , 6 Sep 2018