Frequencies for first 10,000 rows of route variable in drug2011q4 dataset : The route of drug | administration | Freq. Percent Cum. -----------------------------+----------------------------------- | 4,483 44.83 44.83 021060 | 1 0.01 44.84 021073 | 1 0.01 44.85 021323 | 1 0.01 44.86 021487 | 1 0.01 44.87 022117 | 1 0.01 44.88 022522 | 1 0.01 44.89 071849 | 1 0.01 44.90 077033 | 1 0.01 44.91 077090 | 1 0.01 44.92 077513 | 1 0.01 44.93 089682 | 1 0.01 44.94 200603 | 1 0.01 44.95 AURICULAR (OTIC) | 1 0.01 44.96 BUCCAL | 1 0.01 44.97 CUTANEOUS | 4 0.04 45.01 DENTAL | 1 0.01 45.02 HEMODIALYSIS | 1 0.01 45.03 INTRA-ARTERIAL | 3 0.03 45.06 INTRA-UTERINE | 17 0.17 45.23 INTRACAVERNOUS | 1 0.01 45.24 INTRADERMAL | 1 0.01 45.25 INTRAMUSCULAR | 253 2.53 47.78 INTRAOCULAR | 1 0.01 47.79 INTRAPERITONEAL | 64 0.64 48.43 INTRATHECAL | 4 0.04 48.47 INTRAVENOUS | 897 8.97 57.44 INTRAVENOUS BOLUS | 5 0.05 57.49 INTRAVENOUS DRIP | 117 1.17 58.66 INTRAVESICAL | 3 0.03 58.69 NASAL | 14 0.14 58.83 OPHTHALMIC | 17 0.17 59.00 ORAL | 2,899 28.99 87.99 OROPHARINGEAL | 1 0.01 88.00 OTHER | 4 0.04 88.04 PARENTERAL | 6 0.06 88.10 RECTAL | 4 0.04 88.14 RESPIRATORY (INHALATION) | 72 0.72 88.86 SUBCUTANEOUS | 316 3.16 92.02 SUBLINGUAL | 9 0.09 92.11 TOPICAL | 21 0.21 92.32 TRANSDERMAL | 67 0.67 92.99 TRANSPLACENTAL | 67 0.67 93.66 UNKNOWN | 631 6.31 99.97 VAGINAL | 3 0.03 100.00 -----------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Dec 2015