Frequencies for first 10,000 rows of drinking variable in person dataset :

     Police |
   Reported |
    Alcohol |
Involvement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,272       32.72       32.72
          1 |      1,821       18.21       50.93
          8 |      3,598       35.98       86.91
          9 |      1,309       13.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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