Frequencies for first 10,000 rows of drugid29 variable in namcs2014 dataset :

Drug ID for |
 medication |
        #29 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,991       99.91       99.91
     a51209 |          1        0.01       99.92
     d00168 |          1        0.01       99.93
     d00252 |          1        0.01       99.94
     d00355 |          1        0.01       99.95
     d01013 |          1        0.01       99.96
     d01191 |          1        0.01       99.97
     d04115 |          1        0.01       99.98
     d04797 |          1        0.01       99.99
     d07902 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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