Frequencies for first 10,000 rows of route variable in drug2010q3 dataset : The route of drug | administration | Freq. Percent Cum. -----------------------------+----------------------------------- | 4,105 41.05 41.05 21323 | 1 0.01 41.06 21894 | 1 0.01 41.07 72499 | 1 0.01 41.08 89399 | 1 0.01 41.09 BUCCAL | 2 0.02 41.11 CUTANEOUS | 7 0.07 41.18 EPIDURAL | 4 0.04 41.22 HEMODIALYSIS | 4 0.04 41.26 INTRA-ARTICULAR | 6 0.06 41.32 INTRA-UTERINE | 1 0.01 41.33 INTRADERMAL | 2 0.02 41.35 INTRALESIONAL | 1 0.01 41.36 INTRALYMPHATIC | 1 0.01 41.37 INTRAMUSCULAR | 212 2.12 43.49 INTRAOCULAR | 14 0.14 43.63 INTRAPERITONEAL | 115 1.15 44.78 INTRAVENOUS | 817 8.17 52.95 INTRAVENOUS BOLUS | 35 0.35 53.30 INTRAVENOUS DRIP | 75 0.75 54.05 NASAL | 8 0.08 54.13 OPHTHALMIC | 13 0.13 54.26 ORAL | 2,989 29.89 84.15 OTHER | 9 0.09 84.24 PARENTERAL | 7 0.07 84.31 RECTAL | 16 0.16 84.47 RESPIRATORY (INHALATION) | 79 0.79 85.26 SUBCONJUNCTIVAL | 3 0.03 85.29 SUBCUTANEOUS | 285 2.85 88.14 SUBDERMAL | 6 0.06 88.20 SUBLINGUAL | 3 0.03 88.23 TOPICAL | 50 0.50 88.73 TRANSDERMAL | 51 0.51 89.24 TRANSMAMMARY | 3 0.03 89.27 TRANSPLACENTAL | 119 1.19 90.46 UNKNOWN | 948 9.48 99.94 VAGINAL | 6 0.06 100.00 -----------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Dec 2015