It found 10.7 per cent of adults had
significant hearing problems when listening to speech in the presence of
background noise — but only 2.1 per cent used a hearing aid.
In some cases, it seems to me that the argument in favor of a correlation is so strong that, if we don't see a correlation historically, we have to simply wonder if there is enough data yet to see the correlation, if we are asking the right questions, if there is so much
background noise that it masks why is potentially a very
significant correlation — or some combination thereof.