Frequencies for first 10,000 rows of drg2ing3 variable in nhamcsed2001 dataset : ingredient | code #3 for | drug #2 | Freq. Percent Cum. ------------+----------------------------------- | 9,928 99.28 99.28 50745 | 3 0.03 99.31 52647 | 2 0.02 99.33 52980 | 1 0.01 99.34 53175 | 6 0.06 99.40 53895 | 2 0.02 99.42 54330 | 1 0.01 99.43 54400 | 1 0.01 99.44 54455 | 1 0.01 99.45 54465 | 1 0.01 99.46 54480 | 1 0.01 99.47 54595 | 5 0.05 99.52 54960 | 6 0.06 99.58 55105 | 4 0.04 99.62 55180 | 13 0.13 99.75 55240 | 8 0.08 99.83 55265 | 1 0.01 99.84 55480 | 1 0.01 99.85 55715 | 2 0.02 99.87 57034 | 1 0.01 99.88 59803 | 2 0.02 99.90 70011 | 8 0.08 99.98 70256 | 1 0.01 99.99 70338 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016