Frequencies for first 10,000 rows of drg5ing3 variable in nhamcsed2003 dataset :

  ingredient code #3 for medication |
                                 #5 |      Freq.     Percent        Cum.
------------------------------------+-----------------------------------
                           caffeine |          1        0.01        0.01
                     dihydrocodeine |          1        0.01        0.02
                     methylene blue |          1        0.01        0.03
                             pectin |          1        0.01        0.04
                         riboflavin |          3        0.03        0.07
                    sodium chloride |          1        0.01        0.08
                          vitamin b |          1        0.01        0.09
                   atropine sulfate |          3        0.03        0.12
                pseudoephedrine hcl |          1        0.01        0.13
                  phenylephrine hcl |          1        0.01        0.14
                                  . |      9,986       99.86      100.00
------------------------------------+-----------------------------------
                              Total |     10,000      100.00

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