Frequencies for first 10,000 rows of drugid28 variable in namcs2014 dataset :

Drug ID for |
 medication |
        #28 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,988       99.88       99.88
     a11730 |          1        0.01       99.89
     c00061 |          1        0.01       99.90
     d00032 |          1        0.01       99.91
     d00091 |          1        0.01       99.92
     d00743 |          1        0.01       99.93
     d00746 |          1        0.01       99.94
     d00749 |          1        0.01       99.95
     d00867 |          1        0.01       99.96
     d03826 |          1        0.01       99.97
     d04279 |          1        0.01       99.98
     d04420 |          1        0.01       99.99
     d04825 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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