Frequencies for first 10,000 rows of drugid22 variable in nhamcsed2014 dataset :

    Drug ID |
   code for |
 medication |
        #22 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,986       99.86       99.86
     d00052 |          1        0.01       99.87
     d00056 |          1        0.01       99.88
     d00083 |          1        0.01       99.89
     d00124 |          1        0.01       99.90
     d00142 |          1        0.01       99.91
     d00206 |          1        0.01       99.92
     d00265 |          1        0.01       99.93
     d00438 |          1        0.01       99.94
     d00787 |          1        0.01       99.95
     d01021 |          1        0.01       99.96
     d03165 |          1        0.01       99.97
     d03646 |          1        0.01       99.98
     d03826 |          1        0.01       99.99
     d04399 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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