Frequencies for first 10,000 rows of drg3ing4 variable in namcs2002 dataset :

 Ingredient |
code #4 for |
 medication |
         #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,988       99.88       99.88
      55755 |          2        0.02       99.90
      56193 |          2        0.02       99.92
      56265 |          1        0.01       99.93
      70260 |          3        0.03       99.96
      70344 |          1        0.01       99.97
      70440 |          1        0.01       99.98
      70457 |          1        0.01       99.99
      70668 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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