A 5 dB threshold change on retest triggers full retesting and best-value recording
Evidence
If the retest measurement at 1 kHz has changed by more than 5 dB, other frequencies should be retested and the most sensitive value (lowest dBHL value) recorded. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2352
Categorization
Category: Factual Claims
- QUESTION: Why is the lowest (most sensitive) value the one recorded — could this bias toward normal-hearing readings? Worth checking whether this is a standardization choice or clinically argued.
Related
- Healthy hearing detects 1 to 2 dB level changes at 60 dB (similarity 0.79)