Frequencies for first 10,000 rows of drugid27 variable in namcs2014 dataset :

Drug ID for |
 medication |
        #27 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,985       99.85       99.85
     d00021 |          1        0.01       99.86
     d00170 |          1        0.01       99.87
     d00348 |          1        0.01       99.88
     d00373 |          1        0.01       99.89
     d00746 |          1        0.01       99.90
     d03182 |          1        0.01       99.91
     d03191 |          1        0.01       99.92
     d03425 |          1        0.01       99.93
     d03644 |          1        0.01       99.94
     d04145 |          1        0.01       99.95
     d04286 |          1        0.01       99.96
     d04824 |          1        0.01       99.97
     d05702 |          1        0.01       99.98
     d06665 |          1        0.01       99.99
     d06848 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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