Frequencies for first 10,000 rows of drg1ing5 variable in nhamcsed2002 dataset :

 ingredient |
code #5 for |
    drug #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,966       99.66       99.66
      55348 |         18        0.18       99.84
      56185 |         11        0.11       99.95
      56193 |          1        0.01       99.96
      56195 |          1        0.01       99.97
      56585 |          1        0.01       99.98
      70396 |          1        0.01       99.99
      70449 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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