Frequencies for first 10,000 rows of drg6ing3 variable in namcs1996 dataset :

 ingredient |
code #3 for |
 medication |
         #6 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,991       99.91       99.91
      53175 |          1        0.01       99.92
      53650 |          1        0.01       99.93
      54395 |          4        0.04       99.97
      54400 |          1        0.01       99.98
      54455 |          1        0.01       99.99
      55105 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016