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

     police |
   reported |
    alcohol |
involvement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,732       37.32       37.32
          1 |        977        9.77       47.09
          8 |      3,222       32.22       79.31
          9 |      2,069       20.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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