Frequencies for first 10,000 rows of drg7ing2 variable in nhamcsed2003 dataset :

  ingredient code #2 for medication |
                                 #7 |      Freq.     Percent        Cum.
------------------------------------+-----------------------------------
                            aspirin |          1        0.01        0.01
                         butalbital |          1        0.01        0.02
                         pyridoxine |          1        0.01        0.03
                         riboflavin |          2        0.02        0.05
                        simethicone |          1        0.01        0.06
                       trimethoprim |          1        0.01        0.07
                          vitamin b |          1        0.01        0.08
                         salmeterol |          1        0.01        0.09
                         lamivudine |          1        0.01        0.10
             propoxyphene napsylate |          1        0.01        0.11
             hydrocodone bitartrate |         10        0.10        0.21
                  codeine phosphate |          3        0.03        0.24
                      oxycodone hcl |          4        0.04        0.28
                  magnesium citrate |          1        0.01        0.29
              clavulanate potassium |          1        0.01        0.30
                   neomycin sulfate |          1        0.01        0.31
                amlodipine besylate |          1        0.01        0.32
        medroxyprogesterone acetate |          1        0.01        0.33
                                  . |      9,967       99.67      100.00
------------------------------------+-----------------------------------
                              Total |     10,000      100.00

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