An Exploration of the Memory Performance in Older Adult Hearing Aid Users on the Integrated Digit-in-Noise Test.
Shangqiguo Wang, Lena L N Wong
PMID 38715401WHAT IT FOUND
A new hearing-in-noise test distinguishes older adults who fail cognitive screening from those who pass.
It takes about five minutes, works on tablets, and does not require special training, offering a potential quick screen for memory issues in hearing aid users.
Key findings
01The difference between five-digit and two-digit signal-to-noise ratios strongly correlated with working memory scores and cognitive screening results.
02This difference in signal-to-noise ratios accurately identified participants who failed the Montreal Cognitive Assessment, with high sensitivity and specificity.
03Unlike traditional cognitive tests, this auditory measure showed no significant correlation with education level after accounting for other factors.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The study is a preliminary exploration with a relatively small sample size (81 participants). The MoCA-BC is a screening tool itself, not a definitive diagnostic benchmark, so its use as a 'gold standard' for validation is limited. Participants were all hearing aid users with aided hearing, so results may not generalize to those with untreated or severe hearing loss. The test was administered in a sound-treated booth, which may differ from typical clinical environments. The study did not evaluate the impact of different response modes (e.g., verbal vs. typing) on test performance.
Declared interests
The authors declared no conflicts of interest. The research was supported by non-U.S. government funding.
The easy way to misread this
Do not interpret the high diagnostic accuracy as evidence that this test can replace a full neuropsychological evaluation. It is a screening tool that correlates with cognitive decline but has not been validated against clinical diagnoses of dementia or mild cognitive impairment.