Frequencies for first 10,000 rows of eniflag9 variable in mort1975 dataset :

   eniflag9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         67        0.67        0.67
          1 |          1        0.01        0.68
          . |      9,932       99.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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