Frequencies for first 10,000 rows of drg8ing2 variable in namcs2003 dataset :

 ingredient |
code #2 for |
 medication |
         #8 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,969       99.69       99.69
      50728 |          2        0.02       99.71
      52650 |          1        0.01       99.72
      53670 |          1        0.01       99.73
      54960 |          2        0.02       99.75
      54990 |          1        0.01       99.76
      55925 |          3        0.03       99.79
      55997 |          2        0.02       99.81
      56194 |          2        0.02       99.83
      57130 |          3        0.03       99.86
      70112 |          1        0.01       99.87
      70150 |          3        0.03       99.90
      70216 |          1        0.01       99.91
      70217 |          3        0.03       99.94
      70258 |          1        0.01       99.95
      70359 |          2        0.02       99.97
      70378 |          1        0.01       99.98
      70564 |          1        0.01       99.99
      70565 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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