Frequencies for first 10,000 rows of contsub24 variable in nhamcsed2015 dataset

      Controlled substance |
status code for medication |
                       #24 |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
               Schedule II |          1        0.01        0.01
               Schedule IV |          1        0.01        0.02
                No control |         15        0.15        0.17
                         . |      9,983       99.83      100.00
---------------------------+-----------------------------------
                     Total |     10,000      100.00

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