Frequencies for first 10,000 rows of drg5ing3 variable in namcs2004 dataset :

 ingredient |
code #3 for |
 medication |
         #5 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,987       99.87       99.87
      54455 |          1        0.01       99.88
      54755 |          1        0.01       99.89
      55105 |          4        0.04       99.93
      55905 |          2        0.02       99.95
      56193 |          1        0.01       99.96
      70120 |          1        0.01       99.97
      70259 |          1        0.01       99.98
      70404 |          1        0.01       99.99
      70407 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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