Frequencies for first 10,000 rows of contsub22 variable in nhamcsed2015 dataset

      Controlled substance |
status code for medication |
                       #22 |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
               Schedule II |          1        0.01        0.01
                No control |         21        0.21        0.22
                         . |      9,978       99.78      100.00
---------------------------+-----------------------------------
                     Total |     10,000      100.00

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