Frequencies for first 10,000 rows of contsub11 variable in nhamcsed2015 dataset

      Controlled substance |
status code for medication |
                       #11 |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
               Schedule II |          5        0.05        0.05
              Schedule III |          1        0.01        0.06
               Schedule IV |          8        0.08        0.14
                No control |        158        1.58        1.72
              Undetermined |          3        0.03        1.75
        Multiple schedules |          1        0.01        1.76
                         . |      9,824       98.24      100.00
---------------------------+-----------------------------------
                     Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017