Frequencies for first 10,000 rows of contsub8 variable in namcs2014 dataset :

 Controlled substance code |
         for medication #8 |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
               Schedule II |         13        0.13        0.13
              Schedule III |         19        0.19        0.32
               Schedule IV |         42        0.42        0.74
                Schedule V |          7        0.07        0.81
                No control |      1,358       13.58       14.39
              Undetermined |         46        0.46       14.85
        Multiple schedules |          2        0.02       14.87
                         . |      8,513       85.13      100.00
---------------------------+-----------------------------------
                     Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017