Frequencies for first 10,000 rows of drg8ing2 variable in nhamcsopd2005 dataset :

ingredient code #2 for medication #8 |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                        benzoic acid |          1        0.01        0.01
                         hydrocodone |          1        0.01        0.02
               multivitamins general |          1        0.01        0.03
                               rutin |          1        0.01        0.04
                           vitamin d |          2        0.02        0.06
                          salmeterol |          5        0.05        0.11
                           metformin |          1        0.01        0.12
                         glucosamine |          2        0.02        0.14
                 magnesium hydroxide |          3        0.03        0.17
                    atropine sulfate |          1        0.01        0.18
              propoxyphene napsylate |          1        0.01        0.19
              hydrocodone bitartrate |          9        0.09        0.28
             phenylpropanolamine hcl |          1        0.01        0.29
                 amphetamine sulfate |          1        0.01        0.30
                       oxycodone hcl |          2        0.02        0.32
                   albuterol sulfate |          2        0.02        0.34
               phenylephrine tannate |          1        0.01        0.35
                    promethazine hcl |          1        0.01        0.36
                           ezetimibe |          1        0.01        0.37
                 amlodipine besylate |          1        0.01        0.38
                         misoprostol |          1        0.01        0.39
                                   . |      9,961       99.61      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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