Reference data for pure tone audiometry in the elderly

[Massimo Grassi <massimo.grassi@xxxxxxxx>]

Dear all,

I looking for some reference data for the pure tone audiometry in 
listeners older than 65. I need to understand whether the participants 
of my experiment (age range 65-85) are within the "normal hearing" 
limits for this particular age range.

I know it sounds like a simple question. However, all the reference I 
found were quite old. I was wandering whether there is something more 
recent out there.

Thank you in advance,
m

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http://www.psy.unipd.it/~grassi/