Frequencies for first 10,000 rows of drugid21 variable in namcs2014 dataset :

Drug ID for |
 medication |
        #21 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,934       99.34       99.34
     a10730 |          1        0.01       99.35
     a56345 |          2        0.02       99.37
     c00012 |          1        0.01       99.38
     c00025 |          2        0.02       99.40
     c00096 |          1        0.01       99.41
     c00110 |          1        0.01       99.42
     c00220 |          1        0.01       99.43
     d00013 |          1        0.01       99.44
     d00049 |          3        0.03       99.47
     d00091 |          1        0.01       99.48
     d00124 |          1        0.01       99.49
     d00134 |          3        0.03       99.52
     d00148 |          1        0.01       99.53
     d00170 |          2        0.02       99.55
     d00212 |          1        0.01       99.56
     d00255 |          1        0.01       99.57
     d00278 |          1        0.01       99.58
     d00298 |          1        0.01       99.59
     d00350 |          2        0.02       99.61
     d00395 |          1        0.01       99.62
     d00405 |          1        0.01       99.63
     d00413 |          1        0.01       99.64
     d00497 |          2        0.02       99.66
     d00541 |          1        0.01       99.67
     d00732 |          1        0.01       99.68
     d00749 |          1        0.01       99.69
     d00797 |          1        0.01       99.70
     d00867 |          1        0.01       99.71
     d00910 |          1        0.01       99.72
     d00963 |          1        0.01       99.73
     d01021 |          2        0.02       99.75
     d01164 |          1        0.01       99.76
     d03129 |          1        0.01       99.77
     d03140 |          2        0.02       99.79
     d03180 |          2        0.02       99.81
     d03182 |          1        0.01       99.82
     d03206 |          1        0.01       99.83
     d03455 |          1        0.01       99.84
     d03807 |          1        0.01       99.85
     d03826 |          1        0.01       99.86
     d03828 |          1        0.01       99.87
     d03897 |          1        0.01       99.88
     d03994 |          1        0.01       99.89
     d04121 |          1        0.01       99.90
     d04145 |          1        0.01       99.91
     d04242 |          1        0.01       99.92
     d04258 |          1        0.01       99.93
     d04285 |          1        0.01       99.94
     d04289 |          1        0.01       99.95
     d04399 |          1        0.01       99.96
     d05436 |          1        0.01       99.97
     d07356 |          1        0.01       99.98
     d07396 |          1        0.01       99.99
     d07640 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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