Frequencies for first 10,000 rows of rx10v1c4 variable in nhamcsed2013 dataset : For RX10, | level 1 of | MULTUM drug | category #4 | (broad | level) | Freq. Percent Cum. ------------+----------------------------------- | 9,999 99.99 99.99 057 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 7 Nov 2016