Frequencies for first 10,000 rows of drg2ing3 variable in nhamcsopd2004 dataset : ingredient code #3 for medication | #2 | Freq. Percent Cum. ------------------------------------+----------------------------------- caffeine | 2 0.02 0.02 gluconic acid | 1 0.01 0.03 glycerin | 1 0.01 0.04 isometheptene mucate | 2 0.02 0.06 lidocaine | 2 0.02 0.08 magnesium antacids | 1 0.01 0.09 menthol | 1 0.01 0.10 mineral oil | 1 0.01 0.11 niacin | 1 0.01 0.12 peppermint | 1 0.01 0.13 phenylephrine | 14 0.14 0.27 phenylpropanolamine | 1 0.01 0.28 phenyltoloxamine | 1 0.01 0.29 polyethylene glycol | 1 0.01 0.30 potassium replacement solutions | 2 0.02 0.32 pramoxine | 1 0.01 0.33 pseudoephedrine | 5 0.05 0.38 pyridoxine | 2 0.02 0.40 riboflavin | 77 0.77 1.17 rubella virus vaccine | 12 0.12 1.29 safflower oil | 1 0.01 1.30 starch | 2 0.02 1.32 talc | 2 0.02 1.34 tetracaine | 1 0.01 1.35 theophylline | 1 0.01 1.36 thiamine | 3 0.03 1.39 potassium chloride | 3 0.03 1.42 phosphorus | 2 0.02 1.44 abacavir sulfate | 3 0.03 1.47 chlorpheniramine maleate | 1 0.01 1.48 pseudoephedrine hcl | 1 0.01 1.49 dextroamphetamine saccharate | 4 0.04 1.53 dextromethorphan hbr | 6 0.06 1.59 diphenhydramine hcl | 1 0.01 1.60 phenylephrine hcl | 3 0.03 1.63 neomycin sulfate | 4 0.04 1.67 pheniramine maleate | 1 0.01 1.68 ertapenem sodium | 3 0.03 1.71 oxycodone terephthalate | 1 0.01 1.72 tetanus vaccine | 18 0.18 1.90 mineral wax | 4 0.04 1.94 pertussis toxin | 4 0.04 1.98 . | 9,802 98.02 100.00 ------------------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016