Frequencies for first 10,000 rows of drg8ing3 variable in nhamcsopd2003 dataset :

  ingredient code #3 for medication |
                                 #8 |      Freq.     Percent        Cum.
------------------------------------+-----------------------------------
    potassium replacement solutions |          3        0.03        0.03
                         riboflavin |          1        0.01        0.04
                    sodium chloride |          1        0.01        0.05
                          vitamin b |          2        0.02        0.07
                polymyxin b sulfate |          1        0.01        0.08
                                  . |      9,992       99.92      100.00
------------------------------------+-----------------------------------
                              Total |     10,000      100.00

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