Frequencies for first 10,000 rows of drg2ing5 variable in namcs2004 dataset :

 ingredient |
code #5 for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,984       99.84       99.84
      55520 |          1        0.01       99.85
      56185 |          3        0.03       99.88
      56192 |          2        0.02       99.90
      56195 |          1        0.01       99.91
      56585 |          1        0.01       99.92
      70120 |          2        0.02       99.94
      70327 |          1        0.01       99.95
      70396 |          1        0.01       99.96
      70709 |          1        0.01       99.97
      70855 |          2        0.02       99.99
      70946 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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