Frequencies for first 10,000 rows of drg1ing5 variable in nhamcsopd2001 dataset :

 ingredient |
code #5 for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,726       97.26       97.26
      55348 |          2        0.02       97.28
      55520 |          1        0.01       97.29
      56185 |        264        2.64       99.93
      56192 |          1        0.01       99.94
      56265 |          1        0.01       99.95
      56585 |          2        0.02       99.97
      70042 |          1        0.01       99.98
      70365 |          1        0.01       99.99
      70396 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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