Frequencies for first 10,000 rows of drg6ing3 variable in nhamcsed2004 dataset :

  ingredient code #3 for medication |
                                 #6 |      Freq.     Percent        Cum.
------------------------------------+-----------------------------------
                         proteinase |          1        0.01        0.01
                         pyridoxine |          1        0.01        0.02
                         riboflavin |          1        0.01        0.03
              rubella virus vaccine |          2        0.02        0.05
                  vitamin b complex |          1        0.01        0.06
                         amprenavir |          1        0.01        0.07
                   atropine sulfate |          2        0.02        0.09
                                  . |      9,991       99.91      100.00
------------------------------------+-----------------------------------
                              Total |     10,000      100.00

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