Frequencies for first 10,000 rows of contsub8 variable in namcs2011 dataset :

Medication #8 - Controlled |
               status code |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
               Schedule II |         13        0.13        0.13
              Schedule III |         15        0.15        0.28
               Schedule IV |         42        0.42        0.70
                Schedule V |          7        0.07        0.77
                No control |        889        8.89        9.66
              Undetermined |         11        0.11        9.77
        Multiple schedules |          1        0.01        9.78
                         . |      9,022       90.22      100.00
---------------------------+-----------------------------------
                     Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016