Frequencies for first 10,000 rows of drugid22 variable in namcs2014 dataset :

Drug ID for |
 medication |
        #22 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,955       99.55       99.55
     a10685 |          1        0.01       99.56
     a11730 |          1        0.01       99.57
     a56345 |          2        0.02       99.59
     c00123 |          1        0.01       99.60
     c00301 |          1        0.01       99.61
     d00045 |          1        0.01       99.62
     d00049 |          1        0.01       99.63
     d00124 |          1        0.01       99.64
     d00134 |          1        0.01       99.65
     d00139 |          1        0.01       99.66
     d00148 |          1        0.01       99.67
     d00170 |          2        0.02       99.69
     d00278 |          1        0.01       99.70
     d00321 |          1        0.01       99.71
     d00325 |          1        0.01       99.72
     d00329 |          1        0.01       99.73
     d00413 |          1        0.01       99.74
     d00425 |          1        0.01       99.75
     d00426 |          1        0.01       99.76
     d00491 |          1        0.01       99.77
     d00732 |          1        0.01       99.78
     d00848 |          1        0.01       99.79
     d00866 |          1        0.01       99.80
     d01267 |          1        0.01       99.81
     d03128 |          1        0.01       99.82
     d03206 |          1        0.01       99.83
     d03826 |          1        0.01       99.84
     d03828 |          1        0.01       99.85
     d03830 |          1        0.01       99.86
     d04099 |          1        0.01       99.87
     d04121 |          2        0.02       99.89
     d04283 |          1        0.01       99.90
     d04427 |          1        0.01       99.91
     d04523 |          1        0.01       99.92
     d04527 |          1        0.01       99.93
     d04538 |          1        0.01       99.94
     d04723 |          1        0.01       99.95
     d04753 |          1        0.01       99.96
     d04812 |          1        0.01       99.97
     d04851 |          1        0.01       99.98
     d05350 |          1        0.01       99.99
     d05529 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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