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

     police |
   reported |
       drug |
involvement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,809       38.09       38.09
          1 |        389        3.89       41.98
          8 |      3,954       39.54       81.52
          9 |      1,848       18.48      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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