Frequencies for first 10,000 rows of contsub12 variable in nhamcsed2015 dataset

      Controlled substance |
status code for medication |
                       #12 |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
               Schedule II |          2        0.02        0.02
               Schedule IV |          3        0.03        0.05
                No control |        140        1.40        1.45
              Undetermined |          1        0.01        1.46
                         . |      9,854       98.54      100.00
---------------------------+-----------------------------------
                     Total |     10,000      100.00

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