Frequencies for first 10,000 rows of comstat30 variable in nhamcsed2015 dataset Composition status | code for | medication #30 | Freq. Percent Cum. -------------------+----------------------------------- Single entity drug | 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