Frequencies for first 10,000 rows of contsub17 variable in nhamcsed2015 dataset

      Controlled substance |
status code for medication |
                       #17 |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
               Schedule II |          2        0.02        0.02
               Schedule IV |          1        0.01        0.03
                No control |         48        0.48        0.51
                         . |      9,949       99.49      100.00
---------------------------+-----------------------------------
                     Total |     10,000      100.00

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