Mid-frequency hearing loss rises significantly with age even in a screened population.

Evidence

All 71 participants had four frequency (500, 1000, 2000, 4000 Hz) average hearing losses (4FAHL) below 37 dB HL (mean 12.1 dB ±8.2 dB) and all had fairly symmetrical hearing at 2000 Hz and below. Ages of the listeners were between 18 and 77 years (mean of 43.1 years) and there was a significant correlation (r = 0.59, p < 0.001) between 4FAHL and age. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1726

Categorization

• corroborated: 2 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 1726