Frequencies for first 10,000 rows of drg2ing1 variable in nhamcsopd2005 dataset : ingredient code #1 for medication #2 | Freq. Percent Cum. -------------------------------------+----------------------------------- undetermined | 1 0.01 0.01 levonorgestrel | 5 0.05 0.06 acetaminophen | 123 1.23 1.29 alcohol | 6 0.06 1.35 aluminum hydroxide | 4 0.04 1.39 amoxicillin | 26 0.26 1.65 amylase | 1 0.01 1.66 antipyrine | 2 0.02 1.68 aspirin | 3 0.03 1.71 bacitracin | 1 0.01 1.72 benoxinate | 1 0.01 1.73 benzocaine | 1 0.01 1.74 benzoyl peroxide | 1 0.01 1.75 benzyl alcohol | 3 0.03 1.78 beta carotene | 1 0.01 1.79 bile salts | 1 0.01 1.80 brompheniramine | 1 0.01 1.81 buprenorphine hcl | 1 0.01 1.82 calamine | 1 0.01 1.83 calcium replacement agents | 1 0.01 1.84 calcium | 2 0.02 1.86 calcium carbonate | 2 0.02 1.88 calcium ion | 1 0.01 1.89 carbidopa | 1 0.01 1.90 carbinoxamine | 2 0.02 1.92 casanthranol | 1 0.01 1.93 casein | 2 0.02 1.95 castor oil | 3 0.03 1.98 chlorpheniramine | 2 0.02 2.00 ciprofloxacin hcl | 1 0.01 2.01 citric acid | 3 0.03 2.04 clotrimazole | 2 0.02 2.06 codeine | 4 0.04 2.10 dexamethasone | 1 0.01 2.11 dextromethorphan | 2 0.02 2.13 dextrose | 2 0.02 2.15 diphenoxylate | 3 0.03 2.18 diphtheria toxoid | 21 0.21 2.39 ergocalciferol | 71 0.71 3.10 estrogens | 4 0.04 3.14 fluoride | 1 0.01 3.15 fluticasone propionate | 29 0.29 3.44 folic acid | 2 0.02 3.46 glyburide | 1 0.01 3.47 guaifenesin | 19 0.19 3.66 hamamelis water | 1 0.01 3.67 hepatitis b vaccine | 1 0.01 3.68 hydrochlorothiazide | 11 0.11 3.79 hydrocortisone | 4 0.04 3.83 insulin | 1 0.01 3.84 ipratropium bromide | 8 0.08 3.92 iron preparations | 4 0.04 3.96 lanolin | 1 0.01 3.97 lidocaine | 1 0.01 3.98 measles virus vaccine | 11 0.11 4.09 menthol | 2 0.02 4.11 mineral oil | 7 0.07 4.18 minerals | 1 0.01 4.19 multivitamins general | 32 0.32 4.51 multivitamins | 3 0.03 4.54 niacinamide | 2 0.02 4.56 norethindrone | 1 0.01 4.57 norgestrel | 1 0.01 4.58 nystatin | 1 0.01 4.59 papain | 7 0.07 4.66 phenobarbital | 1 0.01 4.67 polyethylene glycol | 2 0.02 4.69 potassium guaiacolsulfonate | 2 0.02 4.71 pseudoephedrine | 1 0.01 4.72 salicylic acid | 1 0.01 4.73 sodium bicarbonate | 5 0.05 4.78 sodium phosphate | 1 0.01 4.79 sulfamethoxazole | 13 0.13 4.92 vitamin a | 1 0.01 4.93 zidovudine | 14 0.14 5.07 amlodipine | 1 0.01 5.08 simvastatin | 5 0.05 5.13 desogestrel | 1 0.01 5.14 norgestimate | 5 0.05 5.19 lamivudine | 1 0.01 5.20 protein | 1 0.01 5.21 dorzolamide hcl | 2 0.02 5.23 metformin | 3 0.03 5.26 ritonavir | 7 0.07 5.33 trandolapril | 1 0.01 5.34 olanzapine | 1 0.01 5.35 polymyxin b | 4 0.04 5.39 ethinyl estradiol | 3 0.03 5.42 maltodextrin nf | 1 0.01 5.43 polymyxin b sulfate | 4 0.04 5.47 hydrocodone bitartrate | 1 0.01 5.48 chlorpheniramine maleate | 5 0.05 5.53 brompheniramine maleate | 5 0.05 5.58 pseudoephedrine hcl | 10 0.10 5.68 amphetamine aspartate | 4 0.04 5.72 phenylephrine hcl | 1 0.01 5.73 phenylephrine tannate | 17 0.17 5.90 aripiprazole | 1 0.01 5.91 erythromycin ethylsuccinate | 1 0.01 5.92 emtricitabine | 3 0.03 5.95 duloxetine hcl | 2 0.02 5.97 diclofenac sodium | 1 0.01 5.98 . | 9,402 94.02 100.00 -------------------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016