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

     police |
   reported |
       drug |
involvement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,773       37.73       37.73
          1 |        290        2.90       40.63
          8 |      3,714       37.14       77.77
          9 |      2,223       22.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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