Frequencies for first 10,000 rows of contsub19 variable in nhamcsed2015 dataset

      Controlled substance |
status code for medication |
                       #19 |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
               Schedule II |          1        0.01        0.01
                No control |         32        0.32        0.33
              Undetermined |          1        0.01        0.34
                         . |      9,966       99.66      100.00
---------------------------+-----------------------------------
                     Total |     10,000      100.00

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