The prevalence of hearing loss increases with age and is greater in males than in females. The prevalence ofpresbycusis, based on audiometric pure-tone threshold data, ranges from almost 50% to over 80% depending on the sample, age, and the definition of hearing loss. Some reports indicate ...
The final score is called the Pure Tone Average (PTA) and represents, for each ear, the mean of all these thresholds. Only the best PTA between the two ears was retained to match the hearing-loss definition of the World Health Organization (WHO). WHO considers hearing loss to be when ...