Frequencies for first 10,000 rows of drg1ing3 variable in nhamcsopd2003 dataset : ingredient code #3 for medication | #1 | Freq. Percent Cum. ------------------------------------+----------------------------------- cinnamedrine | 1 0.01 0.01 isometheptene mucate | 1 0.01 0.02 magnesium antacids | 5 0.05 0.07 petrolatum | 1 0.01 0.08 potassium replacement solutions | 7 0.07 0.15 pseudoephedrine | 2 0.02 0.17 pyridoxine | 2 0.02 0.19 riboflavin | 167 1.67 1.86 rubella virus vaccine | 13 0.13 1.99 sodium acetate | 1 0.01 2.00 sodium bicarbonate | 3 0.03 2.03 sodium ion | 1 0.01 2.04 starch | 2 0.02 2.06 talc | 1 0.01 2.07 tetanus toxoid | 3 0.03 2.10 vitamin a | 1 0.01 2.11 vitamin b | 1 0.01 2.12 haemophilus b conjugate vaccine | 1 0.01 2.13 carbohydrate(s) | 3 0.03 2.16 lansoprazole | 1 0.01 2.17 polymyxin b | 1 0.01 2.18 abacavir sulfate | 6 0.06 2.24 polymyxin b sulfate | 5 0.05 2.29 dextroamphetamine saccharate | 35 0.35 2.64 dextromethorphan hbr | 7 0.07 2.71 phenylephrine hcl | 3 0.03 2.74 neomycin sulfate | 7 0.07 2.81 carbinoxamine maleate | 2 0.02 2.83 pyrilamine tannate | 1 0.01 2.84 pheniramine maleate | 1 0.01 2.85 carbetapentane tannate | 1 0.01 2.86 potassium bicarbonate | 1 0.01 2.87 tetanus vaccine | 64 0.64 3.51 mineral wax | 4 0.04 3.55 pertussis toxin | 6 0.06 3.61 . | 9,639 96.39 100.00 ------------------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016