Frequencies for first 10,000 rows of drg2ing4 variable in nhamcsopd1995 dataset :

 ingredient |
code #4 for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,957       99.57       99.57
      50745 |          1        0.01       99.58
      51340 |          1        0.01       99.59
      54455 |          1        0.01       99.60
      54713 |          2        0.02       99.62
      54995 |          1        0.01       99.63
      55105 |          7        0.07       99.70
      55180 |          2        0.02       99.72
      55710 |          7        0.07       99.79
      55745 |          1        0.01       99.80
      55755 |         16        0.16       99.96
      56193 |          1        0.01       99.97
      56265 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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