Frequencies for first 10,000 rows of drg3ing3 variable in nhamcsed2001 dataset :

 ingredient |
code #3 for |
    drug #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,958       99.58       99.58
      51223 |          1        0.01       99.59
      52647 |          2        0.02       99.61
      52908 |          1        0.01       99.62
      52980 |          1        0.01       99.63
      53070 |          1        0.01       99.64
      53175 |          4        0.04       99.68
      54350 |          1        0.01       99.69
      54465 |          5        0.05       99.74
      54595 |          1        0.01       99.75
      55105 |          1        0.01       99.76
      55145 |          1        0.01       99.77
      55180 |          6        0.06       99.83
      55240 |          6        0.06       99.89
      55480 |          1        0.01       99.90
      55755 |          1        0.01       99.91
      59803 |          1        0.01       99.92
      70011 |          7        0.07       99.99
      70404 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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