Frequencies for first 10,000 rows of route variable in drug2014q4 dataset : The route of drug | administration | Freq. Percent Cum. -------------------+----------------------------------- | 3,289 32.89 32.89 BUCCAL | 4 0.04 32.93 EPIDURAL | 1 0.01 32.94 INHALATION | 147 1.47 34.41 INTRA-ARTERIAL | 3 0.03 34.44 INTRACAVERNOSA | 1 0.01 34.45 INTRADERMAL | 1 0.01 34.46 INTRAHEPATIC | 1 0.01 34.47 INTRAMUSCULAR | 215 2.15 36.62 INTRAOCULAR | 1 0.01 36.63 INTRAPERITONEAL | 4 0.04 36.67 INTRATHECAL | 9 0.09 36.76 INTRAUTERINE | 15 0.15 36.91 INTRAVENOUS | 618 6.18 43.09 INTRAVENOUS BOLUS | 6 0.06 43.15 INTRAVENOUS DRIP | 69 0.69 43.84 NASAL | 18 0.18 44.02 OPHTHALMIC | 15 0.15 44.17 ORAL | 3,859 38.59 82.76 OROPHARINGEAL | 7 0.07 82.83 OTHER | 14 0.14 82.97 PARENTERAL | 3 0.03 83.00 RECTAL | 6 0.06 83.06 SUBCUTANEOUS | 270 2.70 85.76 SUBLINGUAL | 8 0.08 85.84 TOPICAL | 30 0.30 86.14 TRANSDERMAL | 22 0.22 86.36 TRANSMAMMARY | 1 0.01 86.37 TRANSPLACENTAL | 206 2.06 88.43 UNKNOWN | 1,154 11.54 99.97 VAGINAL | 3 0.03 100.00 -------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 19 Apr 2017