Frequencies for first 10,000 rows of rx12v2c2 variable in nhamcsed2012 dataset : For RX12, | level 2 of | MULTUM drug | category #2 | (intermedia | te level) | Freq. Percent Cum. ------------+----------------------------------- | 9,999 99.99 99.99 129 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 7 Nov 2016