Frequencies for first 10,000 rows of eallergo variable in nhamcsopd2010 dataset :

    if yes, do |
they include a |
 comprehensive |
    list of pt |
allergies (inc |
med allergies) |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |     10,000      100.00      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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