Frequencies for first 10,000 rows of med27 variable in namcs2015 dataset :

 Medication |
        #27 |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,991       99.91       99.91
      03134 |          1        0.01       99.92
      03142 |          1        0.01       99.93
      07366 |          1        0.01       99.94
      12490 |          1        0.01       99.95
      20885 |          1        0.01       99.96
      29865 |          1        0.01       99.97
      32905 |          1        0.01       99.98
      91096 |          1        0.01       99.99
      99133 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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