Frequencies for drunk_dr variable in accident dataset :

      Drunk |
    Drivers |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        387       67.78       67.78
          1 |        167       29.25       97.02
          2 |         17        2.98      100.00
------------+-----------------------------------
      Total |        571      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016