Frequencies for first 10,000 rows of drg1ing5 variable in nhamcsopd1999 dataset :

 ingredient |
code #5 for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,844       98.44       98.44
      55273 |          1        0.01       98.45
      55348 |          6        0.06       98.51
      55815 |          1        0.01       98.52
      56185 |        144        1.44       99.96
      56193 |          1        0.01       99.97
      56195 |          1        0.01       99.98
      56210 |          1        0.01       99.99
      56265 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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