Frequencies for first 10,000 rows of drg1ing5 variable in nhamcsopd1996 dataset :

 ingredient |
code #5 for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,787       97.87       97.87
      54440 |          1        0.01       97.88
      54590 |          1        0.01       97.89
      55348 |          4        0.04       97.93
      55755 |          7        0.07       98.00
      56185 |        199        1.99       99.99
      56193 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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