Frequencies for first 10,000 rows of drg5ing5 variable in namcs1996 dataset :

 ingredient |
code #5 for |
 medication |
         #5 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,993       99.93       99.93
      54440 |          1        0.01       99.94
      55320 |          1        0.01       99.95
      55815 |          1        0.01       99.96
      56185 |          3        0.03       99.99
      56192 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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