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

     police |
   reported |
    alcohol |
involvement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,627       36.27       36.27
          1 |        988        9.88       46.15
          8 |      3,268       32.68       78.83
          9 |      2,117       21.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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