Frequencies for first 10,000 rows of drg2ing4 variable in nhamcsopd1994 dataset :

 ingredient |
code #4 for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,933       99.33       99.33
      53780 |          1        0.01       99.34
      54468 |          4        0.04       99.38
      54655 |          1        0.01       99.39
      54713 |          1        0.01       99.40
      54895 |          1        0.01       99.41
      54995 |          1        0.01       99.42
      55105 |         26        0.26       99.68
      55710 |          3        0.03       99.71
      55755 |          9        0.09       99.80
      55770 |          1        0.01       99.81
      55905 |          1        0.01       99.82
      56193 |         12        0.12       99.94
      56194 |          1        0.01       99.95
      56265 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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