Frequencies for first 10,000 rows of drg1ing5 variable in nhamcsopd2004 dataset :

  ingredient code #5 for medication |
                                 #1 |      Freq.     Percent        Cum.
------------------------------------+-----------------------------------
                     salicylic acid |          1        0.01        0.01
                    sodium alginate |          1        0.01        0.02
                         sodium ion |          5        0.05        0.07
                            sucrose |          2        0.02        0.09
                           thiamine |          3        0.03        0.12
                         thimerosal |          1        0.01        0.13
                          vitamin a |        323        3.23        3.36
                          vitamin c |          1        0.01        3.37
                 potassium chloride |          1        0.01        3.38
                            guarana |          1        0.01        3.39
                  phenylephrine hcl |          2        0.02        3.41
                   neomycin sulfate |          1        0.01        3.42
                            tapioca |          1        0.01        3.43
                      cod liver oil |          1        0.01        3.44
                          pertactin |         13        0.13        3.57
                                  . |      9,643       96.43      100.00
------------------------------------+-----------------------------------
                              Total |     10,000      100.00

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