Frequencies for first 10,000 rows of route variable in drug2015q3 dataset : The route of drug administration | Freq. Percent Cum. --------------------------------------+----------------------------------- | 2,671 26.71 26.71 Epidural | 3 0.03 26.74 INTRA-AURAL | 1 0.01 26.75 Intra-uterine | 21 0.21 26.96 Intrameningeal | 3 0.03 26.99 Intramuscular | 220 2.20 29.19 Intraocular | 2 0.02 29.21 Intraperitoneal | 4 0.04 29.25 Intravenous (not otherwise specified) | 1,001 10.01 39.26 Intravenous bolus | 27 0.27 39.53 Intravenous drip | 67 0.67 40.20 Nasal | 15 0.15 40.35 Occlusive dressing technique | 1 0.01 40.36 Ophthalmic | 22 0.22 40.58 Oral | 3,239 32.39 72.97 Oropharingeal | 1 0.01 72.98 Other | 20 0.20 73.18 Parenteral | 4 0.04 73.22 Rectal | 1 0.01 73.23 Respiratory (inhalation) | 185 1.85 75.08 Subcutaneous | 227 2.27 77.35 Sublingual | 12 0.12 77.47 Sunconjunctival | 1 0.01 77.48 Topical | 30 0.30 77.78 Transdermal | 31 0.31 78.09 Transmammary | 1 0.01 78.10 Transplacental | 99 0.99 79.09 Unknown | 2,091 20.91 100.00 --------------------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 19 Apr 2017