Frequencies for first 10,000 rows of drugid16 variable in nhamcsed2015 dataset 

    Drug ID |
   code for |
 medication |
        #16 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,938       99.38       99.38
     a50770 |          1        0.01       99.39
     a52885 |          1        0.01       99.40
     a54655 |          2        0.02       99.42
     a55115 |          2        0.02       99.44
     d00002 |          1        0.01       99.45
     d00011 |          1        0.01       99.46
     d00013 |          1        0.01       99.47
     d00015 |          1        0.01       99.48
     d00016 |          1        0.01       99.49
     d00022 |          1        0.01       99.50
     d00027 |          1        0.01       99.51
     d00049 |          2        0.02       99.53
     d00095 |          1        0.01       99.54
     d00108 |          1        0.01       99.55
     d00132 |          1        0.01       99.56
     d00141 |          1        0.01       99.57
     d00149 |          2        0.02       99.59
     d00252 |          2        0.02       99.61
     d00253 |          1        0.01       99.62
     d00298 |          1        0.01       99.63
     d00325 |          2        0.02       99.65
     d00328 |          1        0.01       99.66
     d00329 |          1        0.01       99.67
     d00355 |          1        0.01       99.68
     d00373 |          1        0.01       99.69
     d00438 |          3        0.03       99.72
     d00468 |          1        0.01       99.73
     d00497 |          1        0.01       99.74
     d00732 |          1        0.01       99.75
     d00749 |          1        0.01       99.76
     d00910 |          1        0.01       99.77
     d01008 |          1        0.01       99.78
     d01013 |          1        0.01       99.79
     d03180 |          1        0.01       99.80
     d03182 |          1        0.01       99.81
     d03428 |          1        0.01       99.82
     d03431 |          1        0.01       99.83
     d03692 |          1        0.01       99.84
     d03752 |          1        0.01       99.85
     d03821 |          1        0.01       99.86
     d03828 |          2        0.02       99.88
     d04066 |          2        0.02       99.90
     d04109 |          1        0.01       99.91
     d04121 |          2        0.02       99.93
     d04514 |          2        0.02       99.95
     d04787 |          1        0.01       99.96
     d04882 |          1        0.01       99.97
     d05355 |          1        0.01       99.98
     d05413 |          1        0.01       99.99
     d06860 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017