Frequencies for first 10,000 rows of contsub30 variable in nhamcsed2015 dataset Controlled substance | status code for medication | #30 | Freq. Percent Cum. ---------------------------+----------------------------------- No control | 2 0.02 0.02 . | 9,998 99.98 100.00 ---------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 20 Nov 2017