Frequencies for first 10,000 rows of drg6ing2 variable in nhamcsed1998 dataset :

 ingredient |
code #2 for |
    drug #6 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,990       99.90       99.90
      50005 |          1        0.01       99.91
      52650 |          3        0.03       99.94
      52720 |          1        0.01       99.95
      52883 |          1        0.01       99.96
      53175 |          1        0.01       99.97
      54890 |          1        0.01       99.98
      55710 |          1        0.01       99.99
      55925 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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