Frequencies for first 10,000 rows of route variable in drug2006q2 dataset : The route of drug | administration | Freq. Percent Cum. -----------------------------+----------------------------------- | 2,698 26.98 26.98 AURICULAR (OTIC) | 1 0.01 26.99 BUCCAL | 4 0.04 27.03 EPIDURAL | 4 0.04 27.07 INTRA-ARTERIAL | 6 0.06 27.13 INTRA-ARTICULAR | 3 0.03 27.16 INTRADERMAL | 6 0.06 27.22 INTRADISCAL (INTRASPINAL) | 2 0.02 27.24 INTRAMUSCULAR | 16 0.16 27.40 INTRAOCULAR | 2 0.02 27.42 INTRATHECAL | 1 0.01 27.43 INTRAVENOUS | 553 5.53 32.96 INTRAVENOUS BOLUS | 14 0.14 33.10 INTRAVENOUS DRIP | 57 0.57 33.67 INTRAVESICAL | 3 0.03 33.70 NASAL | 4 0.04 33.74 OPHTHALMIC | 15 0.15 33.89 ORAL | 3,705 37.05 70.94 OTHER | 22 0.22 71.16 PARENTERAL | 1 0.01 71.17 PERINEURAL | 6 0.06 71.23 RECTAL | 10 0.10 71.33 RESPIRATORY (INHALATION) | 97 0.97 72.30 SUBCUTANEOUS | 146 1.46 73.76 SUBLINGUAL | 13 0.13 73.89 TOPICAL | 19 0.19 74.08 TRANSDERMAL | 52 0.52 74.60 TRANSPLACENTAL | 10 0.10 74.70 UNKNOWN | 2,528 25.28 99.98 VAGINAL | 2 0.02 100.00 -----------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Dec 2015