Frequencies for first 10,000 rows of contsub28 variable in nhamcsed2015 dataset Controlled substance | status code for medication | #28 | Freq. Percent Cum. ---------------------------+----------------------------------- No control | 5 0.05 0.05 . | 9,995 99.95 100.00 ---------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 20 Nov 2017