Frequencies for first 10,000 rows of contsub14 variable in nhamcsed2015 dataset

      Controlled substance |
status code for medication |
                       #14 |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
               Schedule II |          6        0.06        0.06
              Schedule III |          1        0.01        0.07
               Schedule IV |          3        0.03        0.10
                No control |         90        0.90        1.00
        Multiple schedules |          1        0.01        1.01
                         . |      9,899       98.99      100.00
---------------------------+-----------------------------------
                     Total |     10,000      100.00

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