Frequencies for first 10,000 rows of drg2ing5 variable in namcs2003 dataset :

 ingredient |
code #5 for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,988       99.88       99.88
      55348 |          1        0.01       99.89
      55755 |          1        0.01       99.90
      56185 |          4        0.04       99.94
      56193 |          2        0.02       99.96
      56585 |          1        0.01       99.97
      70120 |          1        0.01       99.98
      70362 |          1        0.01       99.99
      70458 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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