Frequencies for first 10,000 rows of med28 variable in namcs2015 dataset :

 Medication |
        #28 |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,992       99.92       99.92
      03319 |          1        0.01       99.93
      17880 |          1        0.01       99.94
      21185 |          1        0.01       99.95
      22315 |          1        0.01       99.96
      33843 |          1        0.01       99.97
      93237 |          1        0.01       99.98
      97168 |          1        0.01       99.99
      99224 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 25 Oct 2017