Frequencies for first 10,000 rows of drugid12 variable in nhamcsed2013 dataset :

    Drug ID |
   code for |
 medication |
        #12 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,942       99.42       99.42
     a10475 |          1        0.01       99.43
     a57024 |          1        0.01       99.44
     d00007 |          1        0.01       99.45
     d00011 |          2        0.02       99.47
     d00019 |          1        0.01       99.48
     d00027 |          1        0.01       99.49
     d00032 |          2        0.02       99.51
     d00037 |          1        0.01       99.52
     d00044 |          1        0.01       99.53
     d00049 |          2        0.02       99.55
     d00050 |          1        0.01       99.56
     d00059 |          1        0.01       99.57
     d00070 |          1        0.01       99.58
     d00088 |          1        0.01       99.59
     d00125 |          1        0.01       99.60
     d00134 |          3        0.03       99.63
     d00212 |          2        0.02       99.65
     d00233 |          2        0.02       99.67
     d00273 |          2        0.02       99.69
     d00278 |          1        0.01       99.70
     d00308 |          1        0.01       99.71
     d00322 |          1        0.01       99.72
     d00438 |          2        0.02       99.74
     d00653 |          1        0.01       99.75
     d00787 |          1        0.01       99.76
     d00867 |          1        0.01       99.77
     d00880 |          1        0.01       99.78
     d00965 |          1        0.01       99.79
     d01015 |          1        0.01       99.80
     d01027 |          1        0.01       99.81
     d03075 |          1        0.01       99.82
     d03130 |          1        0.01       99.83
     d03140 |          2        0.02       99.85
     d03428 |          1        0.01       99.86
     d03485 |          1        0.01       99.87
     d03766 |          1        0.01       99.88
     d03821 |          1        0.01       99.89
     d03838 |          1        0.01       99.90
     d04050 |          1        0.01       99.91
     d04113 |          1        0.01       99.92
     d04115 |          1        0.01       99.93
     d04258 |          1        0.01       99.94
     d04500 |          1        0.01       99.95
     d04514 |          1        0.01       99.96
     d05350 |          1        0.01       99.97
     d06720 |          1        0.01       99.98
     d06860 |          1        0.01       99.99
     d07767 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016