Frequencies for first 10,000 rows of drg5ing4 variable in namcs2005 dataset :

 ingredient |
code #4 for |
 medication |
         #5 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,983       99.83       99.83
      54713 |          1        0.01       99.84
      55755 |          9        0.09       99.93
      56185 |          1        0.01       99.94
      70154 |          1        0.01       99.95
      70260 |          2        0.02       99.97
      70344 |          1        0.01       99.98
      70398 |          1        0.01       99.99
      70927 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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