Frequencies for first 10,000 rows of drg4ing1 variable in nhamcsed2005 dataset : ing. #1 | Freq. Percent Cum. -------------------------------------+----------------------------------- levonorgestrel | 1 0.01 0.01 acetaminophen | 125 1.25 1.26 aluminum hydroxide | 9 0.09 1.35 amoxicillin | 12 0.12 1.47 antipyrine | 2 0.02 1.49 aspirin | 1 0.01 1.50 atropine | 1 0.01 1.51 bacitracin | 1 0.01 1.52 calcium ion | 2 0.02 1.54 dextromethorphan | 1 0.01 1.55 dextrose | 1 0.01 1.56 diphenoxylate | 1 0.01 1.57 diphtheria toxoid | 2 0.02 1.59 epinephrine | 1 0.01 1.60 ergocalciferol | 3 0.03 1.63 estrogens | 2 0.02 1.65 fluticasone propionate | 1 0.01 1.66 guaifenesin | 2 0.02 1.68 hydrochlorothiazide | 4 0.04 1.72 hydrocortisone | 2 0.02 1.74 hyoscyamine hydrobromide | 1 0.01 1.75 ibuprofen | 3 0.03 1.78 ipratropium bromide | 3 0.03 1.81 multivitamins general | 4 0.04 1.85 phenobarbital | 4 0.04 1.89 polyethylene glycol | 1 0.01 1.90 potassium guaiacolsulfonate | 1 0.01 1.91 potassium ion | 1 0.01 1.92 sodium phosphate | 2 0.02 1.94 sulbactin sodium | 2 0.02 1.96 sulfamethoxazole | 12 0.12 2.08 polymyxin b sulfate | 2 0.02 2.10 brompheniramine maleate | 1 0.01 2.11 phenylpropanolamine hcl | 1 0.01 2.12 pseudoephedrine hcl | 3 0.03 2.15 meperidine hcl | 1 0.01 2.16 chlorpheniramine tannate | 2 0.02 2.18 piperacillin sodium | 2 0.02 2.20 emtricitabine | 1 0.01 2.21 . | 9,779 97.79 100.00 -------------------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016