Frequencies for first 10,000 rows of drg8ing3 variable in nhamcsopd2004 dataset :

  ingredient code #3 for medication |
                                 #8 |      Freq.     Percent        Cum.
------------------------------------+-----------------------------------
                         riboflavin |          2        0.02        0.02
                           thiamine |          1        0.01        0.03
                          vitamin b |          1        0.01        0.04
                 potassium chloride |          1        0.01        0.05
                    carbohydrate(s) |          1        0.01        0.06
                   abacavir sulfate |          1        0.01        0.07
                                  . |      9,993       99.93      100.00
------------------------------------+-----------------------------------
                              Total |     10,000      100.00

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