Frequencies for first 10,000 rows of rx4v2c3 variable in nhamcsed2010 dataset : For RX4, | level 2 of | MULTUM drug | category #3 | (intermedia | te level) | Freq. Percent Cum. ------------+----------------------------------- | 9,924 99.24 99.24 064 | 28 0.28 99.52 065 | 35 0.35 99.87 265 | 3 0.03 99.90 270 | 1 0.01 99.91 433 | 9 0.09 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016