Frequencies for first 10,000 rows of route variable in drug2008q3 dataset : The route of drug | administration | Freq. Percent Cum. -----------------------------+----------------------------------- | 4,385 43.85 43.85 20484 | 1 0.01 43.86 21234 | 1 0.01 43.87 21286 | 2 0.02 43.89 21880 | 1 0.01 43.90 AURICULAR (OTIC) | 1 0.01 43.91 BUCCAL | 9 0.09 44.00 CUTANEOUS | 8 0.08 44.08 DENTAL | 1 0.01 44.09 EPIDURAL | 5 0.05 44.14 HEMODIALYSIS | 1 0.01 44.15 INTRA-UTERINE | 94 0.94 45.09 INTRACORNEAL | 1 0.01 45.10 INTRAMUSCULAR | 51 0.51 45.61 INTRAOCULAR | 7 0.07 45.68 INTRAPERITONEAL | 39 0.39 46.07 INTRATHECAL | 7 0.07 46.14 INTRAVENOUS | 807 8.07 54.21 INTRAVENOUS BOLUS | 6 0.06 54.27 INTRAVENOUS DRIP | 73 0.73 55.00 NASAL | 15 0.15 55.15 OPHTHALMIC | 8 0.08 55.23 ORAL | 2,916 29.16 84.39 OROPHARINGEAL | 2 0.02 84.41 OTHER | 5 0.05 84.46 PARENTERAL | 4 0.04 84.50 PERINEURAL | 1 0.01 84.51 RECTAL | 11 0.11 84.62 RESPIRATORY (INHALATION) | 88 0.88 85.50 SUBCONJUNCTIVAL | 4 0.04 85.54 SUBCUTANEOUS | 345 3.45 88.99 SUBLINGUAL | 15 0.15 89.14 TOPICAL | 33 0.33 89.47 TRANSDERMAL | 71 0.71 90.18 TRANSPLACENTAL | 26 0.26 90.44 UNKNOWN | 953 9.53 99.97 VAGINAL | 3 0.03 100.00 -----------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Dec 2015