Frequencies for first 10,000 rows of drg3ing3 variable in nhamcsed1996 dataset :

 ingredient |
code #3 for |
    drug #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,958       99.58       99.58
      50637 |          1        0.01       99.59
      50745 |          3        0.03       99.62
      53175 |          7        0.07       99.69
      54395 |         14        0.14       99.83
      54465 |          3        0.03       99.86
      54595 |          3        0.03       99.89
      54960 |          2        0.02       99.91
      54995 |          2        0.02       99.93
      55105 |          1        0.01       99.94
      55240 |          5        0.05       99.99
      55280 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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