Frequencies for first 10,000 rows of drg4ing2 variable in nhamcsopd1995 dataset :

 ingredient |
code #2 for |
 medication |
         #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,910       99.10       99.10
      50637 |          1        0.01       99.11
      50728 |          4        0.04       99.15
      50730 |          1        0.01       99.16
      51290 |          1        0.01       99.17
      51340 |         11        0.11       99.28
      51708 |          1        0.01       99.29
      52353 |          1        0.01       99.30
      52355 |          2        0.02       99.32
      52650 |          3        0.03       99.35
      53003 |          2        0.02       99.37
      53050 |          1        0.01       99.38
      53118 |          1        0.01       99.39
      53175 |          6        0.06       99.45
      53635 |          1        0.01       99.46
      53720 |          1        0.01       99.47
      53780 |          2        0.02       99.49
      53820 |          1        0.01       99.50
      53895 |          2        0.02       99.52
      53905 |          1        0.01       99.53
      53965 |          1        0.01       99.54
      54094 |          4        0.04       99.58
      54290 |          1        0.01       99.59
      54395 |          1        0.01       99.60
      54455 |          4        0.04       99.64
      54755 |          1        0.01       99.65
      54860 |          2        0.02       99.67
      54890 |          5        0.05       99.72
      54960 |          1        0.01       99.73
      54990 |          3        0.03       99.76
      55925 |          9        0.09       99.85
      55997 |         12        0.12       99.97
      56194 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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