Frequencies for first 10,000 rows of route variable in drug2013q1 dataset :

 The route of drug |
    administration |      Freq.     Percent        Cum.
-------------------+-----------------------------------
                   |      4,714       47.14       47.14
            BUCCAL |          1        0.01       47.15
        INHALATION |         49        0.49       47.64
   INTRA-ARTICULAR |          1        0.01       47.65
     INTRAMUSCULAR |        234        2.34       49.99
       INTRAOCULAR |          2        0.02       50.01
   INTRAPERITONEAL |          2        0.02       50.03
       INTRATHECAL |          4        0.04       50.07
      INTRAUTERINE |          4        0.04       50.11
       INTRAVENOUS |        678        6.78       56.89
 INTRAVENOUS BOLUS |          9        0.09       56.98
  INTRAVENOUS DRIP |        169        1.69       58.67
             NASAL |         15        0.15       58.82
        OPHTHALMIC |          7        0.07       58.89
              ORAL |      2,805       28.05       86.94
             OTHER |          8        0.08       87.02
        PARENTERAL |          1        0.01       87.03
            RECTAL |         11        0.11       87.14
      SUBCUTANEOUS |        255        2.55       89.69
        SUBLINGUAL |        100        1.00       90.69
           TOPICAL |         27        0.27       90.96
      TRANSAMMMARY |          5        0.05       91.01
       TRANSDERMAL |         50        0.50       91.51
    TRANSPLACENTAL |        143        1.43       92.94
           UNKNOWN |        703        7.03       99.97
           VAGINAL |          3        0.03      100.00
-------------------+-----------------------------------
             Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Apr 2017