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

     police |
   reported |
       drug |
involvement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,970       39.70       39.70
          1 |        309        3.09       42.79
          8 |      3,587       35.87       78.66
          9 |      2,134       21.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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