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

     police |
   reported |
       drug |
involvement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,821       38.21       38.21
          1 |        401        4.01       42.22
          8 |      3,960       39.60       81.82
          9 |      1,818       18.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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