Frequencies for first 10,000 rows of drg4ing1 variable in nhamcsopd2004 dataset : ingredient code #1 for medication | #4 | Freq. Percent Cum. ------------------------------------+----------------------------------- levonorgestrel | 1 0.01 0.01 acetaminophen | 24 0.24 0.25 aluminum hydroxide | 2 0.02 0.27 amoxicillin | 5 0.05 0.32 antipyrine | 1 0.01 0.33 aspirin | 2 0.02 0.35 benazepril hydrochloride | 1 0.01 0.36 benzalkonium chloride | 1 0.01 0.37 benzocaine | 4 0.04 0.41 benzyl alcohol | 1 0.01 0.42 biotin | 1 0.01 0.43 calcium | 2 0.02 0.45 calcium carbonate | 2 0.02 0.47 carbidopa | 4 0.04 0.51 cilastatin sodium | 1 0.01 0.52 cobalamin | 1 0.01 0.53 dextromethorphan | 1 0.01 0.54 dextrose | 1 0.01 0.55 diphenoxylate | 1 0.01 0.56 diphtheria toxoid | 5 0.05 0.61 ergocalciferol | 10 0.10 0.71 fluticasone propionate | 9 0.09 0.80 folic acid | 2 0.02 0.82 glyburide | 2 0.02 0.84 hamamelis water | 1 0.01 0.85 hydrochlorothiazide | 13 0.13 0.98 ipratropium bromide | 3 0.03 1.01 iron preparations | 1 0.01 1.02 measles virus vaccine | 4 0.04 1.06 methscopolamine | 1 0.01 1.07 mineral oil | 1 0.01 1.08 multivitamins general | 17 0.17 1.25 multivitamins | 2 0.02 1.27 norethindrone | 1 0.01 1.28 phenobarbital | 1 0.01 1.29 pyridoxine | 1 0.01 1.30 senna | 1 0.01 1.31 sodium phosphate | 1 0.01 1.32 sulfamethoxazole | 15 0.15 1.47 vitamin c | 1 0.01 1.48 zidovudine | 3 0.03 1.51 atovaquone | 1 0.01 1.52 norgestimate | 1 0.01 1.53 dorzolamide hcl | 1 0.01 1.54 metformin | 1 0.01 1.55 ritonavir | 1 0.01 1.56 polymyxin b sulfate | 1 0.01 1.57 insulin recombinant human | 1 0.01 1.58 chlorpheniramine maleate | 2 0.02 1.60 amphetamine aspartate | 3 0.03 1.63 meperidine hcl | 1 0.01 1.64 erythromycin ethylsuccinate | 1 0.01 1.65 . | 9,835 98.35 100.00 ------------------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016