Frequencies for first 10,000 rows of drg1ing4 variable in nhamcsed2002 dataset :

 ingredient |
code #4 for |
    drug #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,957       99.57       99.57
      54713 |         18        0.18       99.75
      55315 |          1        0.01       99.76
      55405 |          1        0.01       99.77
      55755 |         11        0.11       99.88
      56185 |          1        0.01       99.89
      56193 |          1        0.01       99.90
      56265 |          1        0.01       99.91
      70336 |          4        0.04       99.95
      70344 |          1        0.01       99.96
      70448 |          1        0.01       99.97
      70471 |          1        0.01       99.98
      70668 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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