Frequencies for first 10,000 rows of drugid24 variable in nhamcsed2015 dataset 

    Drug ID |
   code for |
 medication |
        #24 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,983       99.83       99.83
     a10707 |          1        0.01       99.84
     d00049 |          1        0.01       99.85
     d00096 |          1        0.01       99.86
     d00125 |          1        0.01       99.87
     d00134 |          1        0.01       99.88
     d00278 |          1        0.01       99.89
     d00329 |          1        0.01       99.90
     d00438 |          1        0.01       99.91
     d00910 |          1        0.01       99.92
     d01027 |          1        0.01       99.93
     d01164 |          1        0.01       99.94
     d01469 |          1        0.01       99.95
     d03140 |          1        0.01       99.96
     d04105 |          1        0.01       99.97
     d04109 |          1        0.01       99.98
     d04740 |          1        0.01       99.99
     d05436 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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