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

     Police |
   Reported |
    Alcohol |
Involvement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,547       35.47       35.47
          1 |      1,777       17.77       53.24
          8 |      3,462       34.62       87.86
          9 |      1,214       12.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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