Frequencies for first 10,000 rows of drg2ing5 variable in namcs2002 dataset :

 Ingredient |
code #5 for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,990       99.90       99.90
      55348 |          1        0.01       99.91
      56185 |          5        0.05       99.96
      56195 |          2        0.02       99.98
      70120 |          1        0.01       99.99
      70388 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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