Frequencies for first 10,000 rows of drg1ing5 variable in nhamcsopd2002 dataset :

 ingredient |
code #5 for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,833       98.33       98.33
      55348 |          3        0.03       98.36
      55520 |          2        0.02       98.38
      55755 |          6        0.06       98.44
      56185 |        149        1.49       99.93
      56192 |          1        0.01       99.94
      56193 |          1        0.01       99.95
      56195 |          1        0.01       99.96
      70120 |          1        0.01       99.97
      70396 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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