Frequencies for first 10,000 rows of route variable in drug2011q2 dataset : The route of drug | administration | Freq. Percent Cum. -----------------------------+----------------------------------- | 4,418 44.18 44.18 020031 | 1 0.01 44.19 020075 | 1 0.01 44.20 021743 | 1 0.01 44.21 021773 | 1 0.01 44.22 022064 | 1 0.01 44.23 022320 | 1 0.01 44.24 065386 | 1 0.01 44.25 071696 | 1 0.01 44.26 076450 | 1 0.01 44.27 089247 | 1 0.01 44.28 AURICULAR (OTIC) | 1 0.01 44.29 BUCCAL | 2 0.02 44.31 CUTANEOUS | 1 0.01 44.32 EPIDURAL | 1 0.01 44.33 INTRA-UTERINE | 37 0.37 44.70 INTRACAVERNOUS | 3 0.03 44.73 INTRADERMAL | 1 0.01 44.74 INTRAMUSCULAR | 122 1.22 45.96 INTRAOCULAR | 33 0.33 46.29 INTRAPERITONEAL | 54 0.54 46.83 INTRATHECAL | 8 0.08 46.91 INTRAVENOUS | 755 7.55 54.46 INTRAVENOUS BOLUS | 13 0.13 54.59 INTRAVENOUS DRIP | 121 1.21 55.80 INTRAVESICAL | 1 0.01 55.81 NASAL | 15 0.15 55.96 OPHTHALMIC | 7 0.07 56.03 ORAL | 3,075 30.75 86.78 OROPHARINGEAL | 2 0.02 86.80 OTHER | 5 0.05 86.85 PARENTERAL | 18 0.18 87.03 RECTAL | 3 0.03 87.06 RESPIRATORY (INHALATION) | 78 0.78 87.84 SUBCUTANEOUS | 331 3.31 91.15 SUBLINGUAL | 3 0.03 91.18 TOPICAL | 36 0.36 91.54 TRANSDERMAL | 65 0.65 92.19 TRANSMAMMARY | 2 0.02 92.21 TRANSPLACENTAL | 39 0.39 92.60 UNKNOWN | 738 7.38 99.98 VAGINAL | 2 0.02 100.00 -----------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Dec 2015