Frequencies for first 10,000 rows of rx9v1c3 variable in namcs2014 dataset : For RX9, | level 1 of | MULTUM drug | category #3 | Freq. Percent Cum. ------------+----------------------------------- | 9,986 99.86 99.86 040 | 2 0.02 99.88 057 | 7 0.07 99.95 105 | 4 0.04 99.99 113 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 27 Mar 2017