Frequencies for first 10,000 rows of eniflag2 variable in mort1975 dataset :

   eniflag2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,927       89.27       89.27
          1 |        123        1.23       90.50
          . |        950        9.50      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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