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

     Police |
   Reported |
    Alcohol |
Involvement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,500       35.00       35.00
          1 |      1,730       17.30       52.30
          8 |      3,464       34.64       86.94
          9 |      1,306       13.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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