Frequencies for first 10,000 rows of drugid27 variable in nhamcsed2015 dataset 

    Drug ID |
   code for |
 medication |
        #27 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,992       99.92       99.92
     d00246 |          1        0.01       99.93
     d00316 |          1        0.01       99.94
     d00746 |          1        0.01       99.95
     d00999 |          1        0.01       99.96
     d03496 |          1        0.01       99.97
     d04008 |          1        0.01       99.98
     d04523 |          1        0.01       99.99
     d04788 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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