Frequencies for first 10,000 rows of drg6ing5 variable in nhamcsopd2004 dataset :

  ingredient code #5 for medication |
                                 #6 |      Freq.     Percent        Cum.
------------------------------------+-----------------------------------
                           thiamine |          1        0.01        0.01
                          vitamin a |         11        0.11        0.12
                          vitamin e |          1        0.01        0.13
                   neomycin sulfate |          1        0.01        0.14
                                  . |      9,986       99.86      100.00
------------------------------------+-----------------------------------
                              Total |     10,000      100.00

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