Frequencies for first 10,000 rows of drg5ing3 variable in nhamcsopd1998 dataset :

 ingredient |
code #3 for |
 medication |
         #5 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,986       99.86       99.86
      50745 |          2        0.02       99.88
      52908 |          1        0.01       99.89
      54328 |          3        0.03       99.92
      54330 |          1        0.01       99.93
      54465 |          3        0.03       99.96
      55105 |          1        0.01       99.97
      55130 |          1        0.01       99.98
      55240 |          1        0.01       99.99
      55770 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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