Frequencies for first 10,000 rows of drg8ing2 variable in nhamcsopd2003 dataset : ingredient code #2 for medication | #8 | Freq. Percent Cum. ------------------------------------+----------------------------------- magnesium acetate | 3 0.03 0.03 neomycin | 1 0.01 0.04 oxycodone | 1 0.01 0.05 polyethylene glycol | 1 0.01 0.06 pyridoxine | 1 0.01 0.07 sodium bicarbonate | 1 0.01 0.08 spironolactone | 1 0.01 0.09 tobramycin | 1 0.01 0.10 triamterene | 4 0.04 0.14 trimethoprim | 2 0.02 0.16 vitamin b-12 | 2 0.02 0.18 vitamin d | 1 0.01 0.19 vitamin e | 1 0.01 0.20 vitamin b | 1 0.01 0.21 salmeterol | 3 0.03 0.24 lamivudine | 1 0.01 0.25 metformin | 2 0.02 0.27 propoxyphene napsylate | 1 0.01 0.28 insulin susp iso recomb human | 1 0.01 0.29 hydrocodone bitartrate | 3 0.03 0.32 codeine phosphate | 3 0.03 0.35 phenylpropanolamine hcl | 1 0.01 0.36 oxycodone hcl | 3 0.03 0.39 albuterol sulfate | 1 0.01 0.40 timolol maleate | 2 0.02 0.42 losartan potassium | 1 0.01 0.43 misoprostol | 1 0.01 0.44 . | 9,956 99.56 100.00 ------------------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016