Frequencies for first 10,000 rows of drg6ing3 variable in namcs2001 dataset :

 ingredient |
code #3 for |
 medication |
         #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,992       99.92       99.92
      54050 |          1        0.01       99.93
      54328 |          1        0.01       99.94
      54465 |          1        0.01       99.95
      55180 |          1        0.01       99.96
      55755 |          2        0.02       99.98
      56185 |          1        0.01       99.99
      70404 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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