Frequencies for first 10,000 rows of drugid25 variable in namcs2015 dataset :

Drug ID for |
 medication |
        #25 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,983       99.83       99.83
     a54015 |          1        0.01       99.84
     a70009 |          1        0.01       99.85
     d00004 |          1        0.01       99.86
     d00108 |          1        0.01       99.87
     d00235 |          1        0.01       99.88
     d00497 |          3        0.03       99.91
     d00749 |          1        0.01       99.92
     d00859 |          1        0.01       99.93
     d00910 |          2        0.02       99.95
     d01259 |          1        0.01       99.96
     d03160 |          1        0.01       99.97
     d03247 |          1        0.01       99.98
     d03826 |          1        0.01       99.99
     d04328 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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