Frequencies for first 10,000 rows of drg2ing5 variable in namcs1996 dataset :

 ingredient |
code #5 for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,970       99.70       99.70
      54305 |          2        0.02       99.72
      54440 |          2        0.02       99.74
      55348 |          6        0.06       99.80
      55755 |          2        0.02       99.82
      56185 |         15        0.15       99.97
      56193 |          1        0.01       99.98
      56195 |          1        0.01       99.99
      56214 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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