Frequencies for first 10,000 rows of drg6ing3 variable in nhamcsopd2005 dataset :

ingredient code #3 for medication #6 |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                            caffeine |          2        0.02        0.02
                isometheptene mucate |          2        0.02        0.04
                          riboflavin |          2        0.02        0.06
               rubella virus vaccine |          1        0.01        0.07
                                talc |          1        0.01        0.08
                            thiamine |          1        0.01        0.09
                           vitamin e |          1        0.01        0.10
                   vitamin b complex |          1        0.01        0.11
                     hydroxyzine hcl |          1        0.01        0.12
                     tetanus vaccine |          2        0.02        0.14
                                   . |      9,986       99.86      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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