Frequencies for first 10,000 rows of route variable in drug2007q3 dataset : The route of drug | administration | Freq. Percent Cum. -----------------------------+----------------------------------- | 4,167 41.67 41.67 BUCCAL | 5 0.05 41.72 CUTANEOUS | 2 0.02 41.74 DENTAL | 2 0.02 41.76 EPIDURAL | 2 0.02 41.78 HEMODIALYSIS | 1 0.01 41.79 INTRA-UTERINE | 13 0.13 41.92 INTRACARDIAC | 1 0.01 41.93 INTRACEREBRAL | 1 0.01 41.94 INTRAMUSCULAR | 65 0.65 42.59 INTRAOCULAR | 12 0.12 42.71 INTRAPERITONEAL | 12 0.12 42.83 INTRASYNOVIAL | 1 0.01 42.84 INTRATHECAL | 6 0.06 42.90 INTRAVENOUS | 929 9.29 52.19 INTRAVENOUS BOLUS | 4 0.04 52.23 INTRAVENOUS DRIP | 54 0.54 52.77 INTRAVESICAL | 1 0.01 52.78 NASAL | 6 0.06 52.84 OPHTHALMIC | 11 0.11 52.95 ORAL | 3,414 34.14 87.09 OROPHARINGEAL | 4 0.04 87.13 OTHER | 9 0.09 87.22 PARENTERAL | 3 0.03 87.25 RECTAL | 19 0.19 87.44 RESPIRATORY (INHALATION) | 81 0.81 88.25 SUBCUTANEOUS | 381 3.81 92.06 SUBDERMAL | 2 0.02 92.08 SUBLINGUAL | 12 0.12 92.20 TOPICAL | 34 0.34 92.54 TRANSDERMAL | 84 0.84 93.38 TRANSPLACENTAL | 27 0.27 93.65 UNKNOWN | 634 6.34 99.99 VAGINAL | 1 0.01 100.00 -----------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Dec 2015