Frequencies for first 10,000 rows of drg3ing3 variable in namcs1999 dataset :

 ingredient |
code #3 for |
 medication |
         #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,949       99.49       99.49
      50745 |          3        0.03       99.52
      52450 |          1        0.01       99.53
      53175 |          1        0.01       99.54
      53640 |          1        0.01       99.55
      54330 |          1        0.01       99.56
      54395 |          1        0.01       99.57
      54455 |          1        0.01       99.58
      54465 |          7        0.07       99.65
      54595 |          4        0.04       99.69
      54960 |          6        0.06       99.75
      54990 |          1        0.01       99.76
      55080 |          1        0.01       99.77
      55130 |          2        0.02       99.79
      55140 |          4        0.04       99.83
      55145 |          1        0.01       99.84
      55240 |          2        0.02       99.86
      55315 |          1        0.01       99.87
      55610 |          2        0.02       99.89
      59803 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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