Frequencies for first 10,000 rows of drg2ing3 variable in nhamcsed2003 dataset :

  ingredient code #3 for medication |
                                 #2 |      Freq.     Percent        Cum.
------------------------------------+-----------------------------------
                           caffeine |          7        0.07        0.07
               isometheptene mucate |          2        0.02        0.09
                          lidocaine |          2        0.02        0.11
                 magnesium antacids |          9        0.09        0.20
                      phenylephrine |          3        0.03        0.23
                   phenyltoloxamine |          2        0.02        0.25
                    pseudoephedrine |          1        0.01        0.26
                         pyridoxine |          1        0.01        0.27
                         riboflavin |          4        0.04        0.31
                    sodium chloride |          1        0.01        0.32
                               talc |          1        0.01        0.33
                       theophylline |          1        0.01        0.34
                  vitamin b complex |          1        0.01        0.35
                        polymyxin b |          3        0.03        0.38
                           protease |          1        0.01        0.39
                   atropine sulfate |         10        0.10        0.49
                polymyxin b sulfate |          2        0.02        0.51
               dextromethorphan hbr |          5        0.05        0.56
                  phenylephrine hcl |          5        0.05        0.61
                   neomycin sulfate |         11        0.11        0.72
              carbinoxamine maleate |          1        0.01        0.73
                pheniramine maleate |          2        0.02        0.75
                   ertapenem sodium |          1        0.01        0.76
                butyl aminobenzoate |          1        0.01        0.77
                                  . |      9,923       99.23      100.00
------------------------------------+-----------------------------------
                              Total |     10,000      100.00

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