Frequencies for first 10,000 rows of contsub16 variable in nhamcsed2015 dataset

      Controlled substance |
status code for medication |
                       #16 |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
               Schedule II |          2        0.02        0.02
              Schedule III |          1        0.01        0.03
               Schedule IV |          3        0.03        0.06
                No control |         56        0.56        0.62
                         . |      9,938       99.38      100.00
---------------------------+-----------------------------------
                     Total |     10,000      100.00

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