Frequencies for first 10,000 rows of drg3ing3 variable in nhamcsed1998 dataset :

 ingredient |
code #3 for |
    drug #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,973       99.73       99.73
      50745 |          1        0.01       99.74
      53175 |          3        0.03       99.77
      54330 |          1        0.01       99.78
      54395 |          9        0.09       99.87
      54465 |          4        0.04       99.91
      54595 |          3        0.03       99.94
      54960 |          1        0.01       99.95
      55240 |          4        0.04       99.99
      56265 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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