Frequencies for first 10,000 rows of drg5ing3 variable in nhamcsed2004 dataset :

  ingredient code #3 for medication |
                                 #5 |      Freq.     Percent        Cum.
------------------------------------+-----------------------------------
                  bismuth, external |          1        0.01        0.01
                          gelsemium |          1        0.01        0.02
               isometheptene mucate |          1        0.01        0.03
                         pyridoxine |          1        0.01        0.04
                         riboflavin |          3        0.03        0.07
                    scopolamine hbr |          1        0.01        0.08
                         sodium ion |          1        0.01        0.09
                           thiamine |          1        0.01        0.10
                  vitamin b complex |          1        0.01        0.11
                   atropine sulfate |          3        0.03        0.14
                diphenhydramine hcl |          1        0.01        0.15
            oxycodone terephthalate |          2        0.02        0.17
                                  . |      9,983       99.83      100.00
------------------------------------+-----------------------------------
                              Total |     10,000      100.00

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