Frequencies for first 10,000 rows of adrg1in2 variable in nhamcsed2002 dataset :

 ingredient |
code #2 for |
    adverse |
    drug #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,984       99.84       99.84
      50728 |          1        0.01       99.85
      51130 |          1        0.01       99.86
      51860 |          1        0.01       99.87
      53175 |          1        0.01       99.88
      53650 |          1        0.01       99.89
      53905 |          1        0.01       99.90
      55997 |          3        0.03       99.93
      70217 |          2        0.02       99.95
      70231 |          2        0.02       99.97
      70269 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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