Frequencies for first 10,000 rows of rx16v1c2 variable in nhamcsed2014 dataset : For RX16, | level 1 of | MULTUM drug | category #2 | (broad | level) | Freq. Percent Cum. ------------+----------------------------------- | 9,993 99.93 99.93 001 | 1 0.01 99.94 040 | 3 0.03 99.97 057 | 1 0.01 99.98 113 | 1 0.01 99.99 122 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 11 Apr 2017