Frequencies for first 10,000 rows of drugid28 variable in nhamcsed2015 dataset 

    Drug ID |
   code for |
 medication |
        #28 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,995       99.95       99.95
     d00048 |          1        0.01       99.96
     d00051 |          1        0.01       99.97
     d00438 |          1        0.01       99.98
     d03189 |          1        0.01       99.99
     d07804 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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