Frequencies for first 10,000 rows of drg5ing3 variable in namcs1995 dataset :

 ingredient |
code #3 for |
 medication |
         #5 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,988       99.88       99.88
      50637 |          1        0.01       99.89
      50745 |          5        0.05       99.94
      52908 |          1        0.01       99.95
      53915 |          1        0.01       99.96
      54050 |          1        0.01       99.97
      54990 |          1        0.01       99.98
      55080 |          1        0.01       99.99
      55105 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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