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

     police |
   reported |
       drug |
involvement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,092       40.92       40.92
          1 |        331        3.31       44.23
          8 |      3,425       34.25       78.48
          9 |      2,152       21.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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