Frequencies for first 10,000 rows of drugid19 variable in nhamcsed2014 dataset :

    Drug ID |
   code for |
 medication |
        #19 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,973       99.73       99.73
     a11730 |          1        0.01       99.74
     a55510 |          1        0.01       99.75
     a71002 |          1        0.01       99.76
     d00134 |          2        0.02       99.78
     d00168 |          1        0.01       99.79
     d00170 |          1        0.01       99.80
     d00301 |          2        0.02       99.82
     d00308 |          2        0.02       99.84
     d00329 |          1        0.01       99.85
     d00438 |          1        0.01       99.86
     d00468 |          1        0.01       99.87
     d00867 |          2        0.02       99.89
     d01021 |          2        0.02       99.91
     d03140 |          1        0.01       99.92
     d03181 |          1        0.01       99.93
     d03428 |          1        0.01       99.94
     d03692 |          1        0.01       99.95
     d03826 |          1        0.01       99.96
     d04514 |          1        0.01       99.97
     d04523 |          1        0.01       99.98
     d04747 |          1        0.01       99.99
     d05847 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 Apr 2017