Frequencies for first 10,000 rows of contsub1 variable in namcs2011 dataset :

Medication #1 - Controlled |
               status code |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
               Schedule II |        285        2.85        2.85
              Schedule III |        191        1.91        4.76
               Schedule IV |        226        2.26        7.02
                Schedule V |         28        0.28        7.30
                No control |      6,978       69.78       77.08
              Undetermined |        196        1.96       79.04
        Multiple schedules |         26        0.26       79.30
                         . |      2,070       20.70      100.00
---------------------------+-----------------------------------
                     Total |     10,000      100.00

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