Frequencies for first 10,000 rows of drg5ing5 variable in namcs2002 dataset :

 Ingredient |
         #5 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,993       99.93       99.93
      55755 |          1        0.01       99.94
      56193 |          1        0.01       99.95
      56195 |          4        0.04       99.99
      70435 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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