Frequencies for first 10,000 rows of drg7ing3 variable in nhamcsopd2003 dataset :

  ingredient code #3 for medication |
                                 #7 |      Freq.     Percent        Cum.
------------------------------------+-----------------------------------
    potassium replacement solutions |          5        0.05        0.05
                         riboflavin |          2        0.02        0.07
                       salicylamide |          1        0.01        0.08
                             starch |          1        0.01        0.09
                         phosphorus |          1        0.01        0.10
       dextroamphetamine saccharate |          1        0.01        0.11
               dextromethorphan hbr |          1        0.01        0.12
                                  . |      9,988       99.88      100.00
------------------------------------+-----------------------------------
                              Total |     10,000      100.00

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