Frequencies for first 10,000 rows of drg3ing5 variable in namcs1994 dataset :

 ingredient |
code #5 for |
 medication |
         #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,986       99.86       99.86
      54590 |          2        0.02       99.88
      54995 |          1        0.01       99.89
      55180 |          2        0.02       99.91
      55348 |          4        0.04       99.95
      56185 |          1        0.01       99.96
      56192 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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