Frequencies for first 10,000 rows of drg5ing3 variable in namcs1993 dataset :

 ingredient |
code #3 for |
 medication |
         #5 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,988       99.88       99.88
      50745 |          1        0.01       99.89
      53175 |          4        0.04       99.93
      54330 |          1        0.01       99.94
      54465 |          2        0.02       99.96
      55130 |          1        0.01       99.97
      55755 |          1        0.01       99.98
      56193 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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