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

     Police |
   Reported |
    Alcohol |
Involvement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,418       34.18       34.18
          1 |      1,719       17.19       51.37
          8 |      3,597       35.97       87.34
          9 |      1,266       12.66      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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