Frequencies for first 10,000 rows of drg2ing3 variable in nhamcsopd2005 dataset : ingredient code #3 for medication #2 | Freq. Percent Cum. -------------------------------------+----------------------------------- caffeine | 3 0.03 0.03 glycerin | 5 0.05 0.08 isometheptene mucate | 1 0.01 0.09 magnesium antacids | 1 0.01 0.10 pepsin | 1 0.01 0.11 pheniramine | 1 0.01 0.12 phenylephrine | 2 0.02 0.14 pramoxine | 1 0.01 0.15 pseudoephedrine | 1 0.01 0.16 pyridoxine | 3 0.03 0.19 riboflavin | 71 0.71 0.90 rubella virus vaccine | 11 0.11 1.01 safflower oil | 2 0.02 1.03 soap | 1 0.01 1.04 sodium ion | 3 0.03 1.07 starch | 3 0.03 1.10 talc | 1 0.01 1.11 tetanus toxoid | 3 0.03 1.14 thiamine | 2 0.02 1.16 vitamin d | 1 0.01 1.17 vitamin b | 2 0.02 1.19 abacavir sulfate | 1 0.01 1.20 protease | 1 0.01 1.21 magnesium hydroxide | 1 0.01 1.22 atropine sulfate | 1 0.01 1.23 polymyxin b sulfate | 2 0.02 1.25 phenylpropanolamine hcl | 2 0.02 1.27 dextroamphetamine saccharate | 4 0.04 1.31 dextromethorphan hbr | 9 0.09 1.40 phenylephrine hcl | 1 0.01 1.41 neomycin sulfate | 4 0.04 1.45 carbinoxamine maleate | 1 0.01 1.46 balsam peru | 3 0.03 1.49 ertapenem sodium | 1 0.01 1.50 chlorophyllin copper complex | 4 0.04 1.54 tetanus vaccine | 12 0.12 1.66 mineral wax | 5 0.05 1.71 pertussis toxin | 3 0.03 1.74 iron | 1 0.01 1.75 . | 9,825 98.25 100.00 -------------------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016