Frequencies for first 10,000 rows of drg4ing2 variable in nhamcsed1999 dataset :

 ingredient |
code #2 for |
    drug #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,882       98.82       98.82
      50785 |          1        0.01       98.83
      51130 |          2        0.02       98.85
      51340 |          3        0.03       98.88
      52353 |          1        0.01       98.89
      52490 |          1        0.01       98.90
      52650 |         33        0.33       99.23
      52720 |          4        0.04       99.27
      52730 |          1        0.01       99.28
      52743 |          1        0.01       99.29
      52883 |          3        0.03       99.32
      53070 |          1        0.01       99.33
      53175 |         13        0.13       99.46
      53280 |          3        0.03       99.49
      53325 |          1        0.01       99.50
      53445 |          3        0.03       99.53
      54094 |         12        0.12       99.65
      54455 |          3        0.03       99.68
      54595 |          2        0.02       99.70
      54890 |          7        0.07       99.77
      54960 |          2        0.02       99.79
      55435 |          1        0.01       99.80
      55590 |          1        0.01       99.81
      55710 |          2        0.02       99.83
      55925 |          1        0.01       99.84
      55997 |          8        0.08       99.92
      57033 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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