Frequencies for first 10,000 rows of contsub10 variable in namcs2014 dataset :

 Controlled substance code |
        for medication #10 |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
               Schedule II |         14        0.14        0.14
              Schedule III |         14        0.14        0.28
               Schedule IV |         30        0.30        0.58
                Schedule V |          3        0.03        0.61
                No control |        875        8.75        9.36
              Undetermined |         21        0.21        9.57
        Multiple schedules |          3        0.03        9.60
                         . |      9,040       90.40      100.00
---------------------------+-----------------------------------
                     Total |     10,000      100.00

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