Frequencies for first 10,000 rows of drg1ing4 variable in nhamcsopd1999 dataset :

 ingredient |
code #4 for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,833       98.33       98.33
      51340 |          1        0.01       98.34
      53325 |          1        0.01       98.35
      54587 |          1        0.01       98.36
      54713 |          6        0.06       98.42
      54895 |          1        0.01       98.43
      55150 |          1        0.01       98.44
      55180 |          1        0.01       98.45
      55645 |          1        0.01       98.46
      55710 |          5        0.05       98.51
      55755 |        144        1.44       99.95
      56185 |          2        0.02       99.97
      56265 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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