Frequencies for first 10,000 rows of rx6v1c3 variable in namcs2009 dataset : for rx6, | level 1 of | multum drug | category #3 | Freq. Percent Cum. ------------+----------------------------------- | 9,991 99.91 99.91 057 | 9 0.09 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016