Frequencies for first 10,000 rows of drg4ing3 variable in nhamcsopd2005 dataset : ingredient code #3 for medication #4 | Freq. Percent Cum. -------------------------------------+----------------------------------- glycerin | 2 0.02 0.02 magnesium antacids | 2 0.02 0.04 menthol | 1 0.01 0.05 methylene blue | 1 0.01 0.06 petrolatum | 1 0.01 0.07 riboflavin | 11 0.11 0.18 rubella virus vaccine | 1 0.01 0.19 starch | 1 0.01 0.20 thiamine | 1 0.01 0.21 vitamin b-12 | 1 0.01 0.22 vitamin c | 1 0.01 0.23 vitamin k | 1 0.01 0.24 vitamin b | 1 0.01 0.25 vitamin b complex | 1 0.01 0.26 abacavir sulfate | 2 0.02 0.28 protease | 1 0.01 0.29 dextroamphetamine saccharate | 4 0.04 0.33 dextromethorphan hbr | 1 0.01 0.34 phenylephrine hcl | 1 0.01 0.35 neomycin sulfate | 2 0.02 0.37 pheniramine maleate | 1 0.01 0.38 chlorophyllin copper complex | 1 0.01 0.39 tetanus vaccine | 3 0.03 0.42 mineral wax | 1 0.01 0.43 pertussis toxin | 1 0.01 0.44 . | 9,956 99.56 100.00 -------------------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016