Frequencies for first 10,000 rows of eniflag5 variable in mort1975 dataset :

   eniflag5 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,040       20.40       20.40
          1 |         36        0.36       20.76
          . |      7,924       79.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015