Frequencies for first 10,000 rows of drugid30 variable in namcs2014 dataset :

Drug ID for |
 medication |
        #30 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,994       99.94       99.94
     c00025 |          1        0.01       99.95
     d00246 |          1        0.01       99.96
     d00859 |          1        0.01       99.97
     d03828 |          1        0.01       99.98
     d04289 |          1        0.01       99.99
     d04523 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017