Frequencies for first 10,000 rows of drg3ing3 variable in nhamcsopd1992 dataset :

 Ingredient |
code #3 for |
 medication |
         #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,976       99.76       99.76
      50637 |          1        0.01       99.77
      50745 |          1        0.01       99.78
      53175 |          1        0.01       99.79
      54395 |          1        0.01       99.80
      54465 |          2        0.02       99.82
      54595 |          1        0.01       99.83
      54995 |          1        0.01       99.84
      55130 |         12        0.12       99.96
      55240 |          1        0.01       99.97
      57028 |          2        0.02       99.99
      57034 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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