Frequencies for first 10,000 rows of contsub3 variable in namcs2011 dataset :

Medication #3 - Controlled |
               status code |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
               Schedule II |         68        0.68        0.68
              Schedule III |         73        0.73        1.41
               Schedule IV |        155        1.55        2.96
                Schedule V |         19        0.19        3.15
                No control |      3,697       36.97       40.12
              Undetermined |         59        0.59       40.71
        Multiple schedules |         11        0.11       40.82
                         . |      5,918       59.18      100.00
---------------------------+-----------------------------------
                     Total |     10,000      100.00

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