Frequencies for first 10,000 rows of dinga24 variable in nhamcsed2001 dataset : ingredient | code #4 for | adverse | drug #2 | Freq. Percent Cum. ------------+----------------------------------- | 9,999 99.99 99.99 70260 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016