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

     police |
   reported |
    alcohol |
involvement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,731       37.31       37.31
          1 |      1,002       10.02       47.33
          8 |      3,185       31.85       79.18
          9 |      2,082       20.82      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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