Frequencies for first 10,000 rows of drunk_dr variable in accident dataset :

   Drinking |
    Drivers |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,625       56.25       56.25
          1 |      4,113       41.13       97.38
          2 |        261        2.61       99.99
          3 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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