Frequencies for first 10,000 rows of drg3ing3 variable in nhamcsopd2005 dataset :

ingredient code #3 for medication #3 |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                isometheptene mucate |          3        0.03        0.03
                  magnesium antacids |          1        0.01        0.04
                       multivitamins |          1        0.01        0.05
                          pyridoxine |          1        0.01        0.06
                          riboflavin |         15        0.15        0.21
               rubella virus vaccine |         16        0.16        0.37
                      tetanus toxoid |          1        0.01        0.38
                            thiamine |          1        0.01        0.39
                        vitamin b-12 |          1        0.01        0.40
                          phosphorus |          1        0.01        0.41
                        lansoprazole |          1        0.01        0.42
                          amprenavir |          1        0.01        0.43
                 polymyxin b sulfate |          1        0.01        0.44
        dextroamphetamine saccharate |          1        0.01        0.45
                dextromethorphan hbr |          2        0.02        0.47
                   phenylephrine hcl |          4        0.04        0.51
                    neomycin sulfate |          2        0.02        0.53
                   gymnema sylvestre |          1        0.01        0.54
                    ertapenem sodium |          2        0.02        0.56
        chlorophyllin copper complex |          2        0.02        0.58
                 butyl aminobenzoate |          1        0.01        0.59
                     tetanus vaccine |          3        0.03        0.62
                         mineral wax |          4        0.04        0.66
                     pertussis toxin |          5        0.05        0.71
                          l-arginine |          1        0.01        0.72
                                   . |      9,928       99.28      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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