Frequencies for first 10,000 rows of drugid23 variable in namcs2015 dataset :

Drug ID for |
 medication |
        #23 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,975       99.75       99.75
     a11421 |          1        0.01       99.76
     a56198 |          1        0.01       99.77
     c00220 |          1        0.01       99.78
     d00179 |          1        0.01       99.79
     d00325 |          1        0.01       99.80
     d00405 |          1        0.01       99.81
     d00426 |          1        0.01       99.82
     d00732 |          1        0.01       99.83
     d00787 |          1        0.01       99.84
     d00848 |          1        0.01       99.85
     d00867 |          2        0.02       99.87
     d00880 |          1        0.01       99.88
     d01288 |          1        0.01       99.89
     d01322 |          1        0.01       99.90
     d03129 |          2        0.02       99.92
     d03428 |          1        0.01       99.93
     d03821 |          1        0.01       99.94
     d04048 |          1        0.01       99.95
     d04057 |          1        0.01       99.96
     d04121 |          1        0.01       99.97
     d04929 |          1        0.01       99.98
     d05851 |          1        0.01       99.99
     d07740 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 25 Oct 2017