Frequencies for first 10,000 rows of contsub15 variable in nhamcsed2015 dataset

      Controlled substance |
status code for medication |
                       #15 |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
               Schedule II |          5        0.05        0.05
               Schedule IV |          2        0.02        0.07
                No control |         69        0.69        0.76
              Undetermined |          2        0.02        0.78
        Multiple schedules |          1        0.01        0.79
                         . |      9,921       99.21      100.00
---------------------------+-----------------------------------
                     Total |     10,000      100.00

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