Frequencies for first 10,000 rows of comstat27 variable in nhamcsed2015 dataset Composition status | code for | medication #27 | Freq. Percent Cum. -------------------+----------------------------------- Single entity drug | 7 0.07 0.07 Combination drug | 1 0.01 0.08 . | 9,992 99.92 100.00 -------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 20 Nov 2017