Frequencies for first 10,000 rows of route variable in drug2012q2 dataset : The route of drug | administration | Freq. Percent Cum. -----------------------------+----------------------------------- | 4,196 41.96 41.96 020075 | 1 0.01 41.97 020214 | 1 0.01 41.98 020287 | 1 0.01 41.99 020743 | 1 0.01 42.00 020835 | 1 0.01 42.01 021196 | 2 0.02 42.03 021485 | 1 0.01 42.04 021880 | 3 0.03 42.07 022275 | 1 0.01 42.08 022382 | 1 0.01 42.09 070848 | 1 0.01 42.10 075761 | 1 0.01 42.11 077959 | 1 0.01 42.12 079124 | 1 0.01 42.13 20071 | 1 0.01 42.14 202258 | 1 0.01 42.15 AURICULAR (OTIC) | 1 0.01 42.16 BUCCAL | 3 0.03 42.19 CUTANEOUS | 4 0.04 42.23 INTRA-ARTICULAR | 1 0.01 42.24 INTRA-UTERINE | 21 0.21 42.45 INTRADERMAL | 1 0.01 42.46 INTRAMUSCULAR | 223 2.23 44.69 INTRAOCULAR | 5 0.05 44.74 INTRATHECAL | 3 0.03 44.77 INTRAVENOUS | 526 5.26 50.03 INTRAVENOUS BOLUS | 11 0.11 50.14 INTRAVENOUS DRIP | 108 1.08 51.22 NASAL | 8 0.08 51.30 OPHTHALMIC | 18 0.18 51.48 ORAL | 3,113 31.13 82.61 OROPHARINGEAL | 1 0.01 82.62 OTHER | 19 0.19 82.81 PARENTERAL | 8 0.08 82.89 RECTAL | 5 0.05 82.94 RESPIRATORY (INHALATION) | 64 0.64 83.58 SUBCUTANEOUS | 285 2.85 86.43 SUBLINGUAL | 10 0.10 86.53 TOPICAL | 109 1.09 87.62 TRANSDERMAL | 138 1.38 89.00 TRANSMAMMARY | 1 0.01 89.01 TRANSPLACENTAL | 222 2.22 91.23 UNKNOWN | 871 8.71 99.94 VAGINAL | 6 0.06 100.00 -----------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Dec 2015