Frequencies for first 10,000 rows of route variable in drug2011q1 dataset : The route of drug | administration | Freq. Percent Cum. -----------------------------+----------------------------------- | 4,247 42.47 42.47 021272 | 1 0.01 42.48 050729 | 1 0.01 42.49 BUCCAL | 3 0.03 42.52 CUTANEOUS | 2 0.02 42.54 ENDOSINUSIAL | 1 0.01 42.55 ENDOTRACHEAL | 1 0.01 42.56 EPIDURAL | 2 0.02 42.58 HEMODIALYSIS | 1 0.01 42.59 INTRA-ARTERIAL | 2 0.02 42.61 INTRA-UTERINE | 10 0.10 42.71 INTRADERMAL | 2 0.02 42.73 INTRAMEDULLAR (BONE MARROW) | 1 0.01 42.74 INTRAMUSCULAR | 97 0.97 43.71 INTRAOCULAR | 24 0.24 43.95 INTRAPERITONEAL | 38 0.38 44.33 INTRATHECAL | 2 0.02 44.35 INTRAVENOUS | 737 7.37 51.72 INTRAVENOUS BOLUS | 15 0.15 51.87 INTRAVENOUS DRIP | 166 1.66 53.53 INTRAVESICAL | 3 0.03 53.56 NASAL | 15 0.15 53.71 OPHTHALMIC | 25 0.25 53.96 ORAL | 3,220 32.20 86.16 OROPHARINGEAL | 2 0.02 86.18 OTHER | 7 0.07 86.25 PARENTERAL | 2 0.02 86.27 RECTAL | 6 0.06 86.33 RESPIRATORY (INHALATION) | 86 0.86 87.19 SUBCUTANEOUS | 299 2.99 90.18 SUBLINGUAL | 7 0.07 90.25 TOPICAL | 29 0.29 90.54 TRANSDERMAL | 103 1.03 91.57 TRANSMAMMARY | 4 0.04 91.61 TRANSPLACENTAL | 63 0.63 92.24 UNKNOWN | 772 7.72 99.96 VAGINAL | 4 0.04 100.00 -----------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Dec 2015