Frequencies for first 10,000 rows of drg4ing2 variable in nhamcsed2005 dataset : ing. #2 | Freq. Percent Cum. -------------------------------------+----------------------------------- acacia gum | 1 0.01 0.01 benzocaine | 2 0.02 0.03 butalbital | 1 0.01 0.04 caffeine | 1 0.01 0.05 chloride ion | 2 0.02 0.07 codeine | 1 0.01 0.08 dichloralphenazone | 1 0.01 0.09 diperodon | 1 0.01 0.10 diphenhydramine | 1 0.01 0.11 diphenoxylate | 1 0.01 0.12 guaifenesin | 1 0.01 0.13 hydrocodone | 1 0.01 0.14 methyltestosterone | 1 0.01 0.15 pheniramine | 1 0.01 0.16 phenobarbital | 1 0.01 0.17 pyridoxine | 3 0.03 0.20 scopolamine hbr | 4 0.04 0.24 sodium bicarbonate | 1 0.01 0.25 sodium chloride | 2 0.02 0.27 tetanus toxoid | 2 0.02 0.29 trimethoprim | 12 0.12 0.41 salmeterol | 1 0.01 0.42 bisoprolol fumarate | 1 0.01 0.43 sodium biphosphate | 2 0.02 0.45 irbesartan | 1 0.01 0.46 magnesium hydroxide | 8 0.08 0.54 atropine sulfate | 1 0.01 0.55 propoxyphene napsylate | 5 0.05 0.60 polymyxin b sulfate | 2 0.02 0.62 hydrocodone bitartrate | 89 0.89 1.51 codeine phosphate | 4 0.04 1.55 ampicillin sodium | 2 0.02 1.57 pseudoephedrine hcl | 1 0.01 1.58 oxycodone hcl | 27 0.27 1.85 tramadol hcl | 1 0.01 1.86 hydralazine hcl | 1 0.01 1.87 clavulanate potassium | 12 0.12 1.99 albuterol sulfate | 3 0.03 2.02 neomycin sulfate | 2 0.02 2.04 lidocaine hcl | 1 0.01 2.05 pyrilamine maleate | 1 0.01 2.06 carbinoxamine maleate | 3 0.03 2.09 phenylephrine tannate | 2 0.02 2.11 promethazine hcl | 1 0.01 2.12 losartan potassium | 1 0.01 2.13 medroxyprogesterone acetate | 1 0.01 2.14 tazobactam sodium | 2 0.02 2.16 tenofovir | 1 0.01 2.17 . | 9,783 97.83 100.00 -------------------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016