Frequencies for first 10,000 rows of drg4ing1 variable in nhamcsed1992 dataset :

 Ingredient |
code #1 for |
    drug #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,932       99.32       99.32
      50000 |          1        0.01       99.33
      50005 |         16        0.16       99.49
      50145 |          9        0.09       99.58
      50210 |          1        0.01       99.59
      50260 |          3        0.03       99.62
      50410 |          1        0.01       99.63
      50420 |          6        0.06       99.69
      50811 |          1        0.01       99.70
      51055 |          1        0.01       99.71
      51130 |          3        0.03       99.74
      51235 |          1        0.01       99.75
      51670 |          3        0.03       99.78
      51675 |          2        0.02       99.80
      52035 |          1        0.01       99.81
      52490 |          3        0.03       99.84
      52615 |          2        0.02       99.86
      52645 |          3        0.03       99.89
      52650 |          1        0.01       99.90
      53780 |          5        0.05       99.95
      54713 |          1        0.01       99.96
      55555 |          3        0.03       99.99
      55835 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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