Frequencies for first 10,000 rows of drugid23 variable in nhamcsed2014 dataset :

    Drug ID |
   code for |
 medication |
        #23 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,987       99.87       99.87
     d00022 |          1        0.01       99.88
     d00049 |          1        0.01       99.89
     d00083 |          1        0.01       99.90
     d00125 |          1        0.01       99.91
     d00134 |          1        0.01       99.92
     d00149 |          1        0.01       99.93
     d00210 |          1        0.01       99.94
     d00254 |          1        0.01       99.95
     d00910 |          2        0.02       99.97
     d01024 |          1        0.01       99.98
     d01027 |          1        0.01       99.99
     d03496 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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