Frequencies for first 10,000 rows of dr_drink variable in vehicle dataset :

     driver |
   drinking |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,190       81.90       81.90
          1 |      1,810       18.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016