Frequencies for first 10,000 rows of contsub11 variable in namcs2014 dataset :

 Controlled substance code |
        for medication #11 |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
               Schedule II |          7        0.07        0.07
              Schedule III |         12        0.12        0.19
               Schedule IV |         31        0.31        0.50
                Schedule V |          7        0.07        0.57
                No control |        698        6.98        7.55
              Undetermined |         14        0.14        7.69
        Multiple schedules |          2        0.02        7.71
                         . |      9,229       92.29      100.00
---------------------------+-----------------------------------
                     Total |     10,000      100.00

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