Interindividual variability in the benefits of personal sound amplification products on speech perception in noise: A randomized cross-over clinical trial

Abstract

Objective The aging population is prone to hearing loss, which has several adverse effects on quality of life, including difficulty following conversations in noisy environments. Personal Sound Amplification Products (PSAPs) are a less expensive, over-the-counter alternative to traditional, more expensive hearing aids. Although some studies have shown that PSAPs can mitigate hearing loss, the literature generally only addresses group differences without considering interindividual variability. This study aimed to 1) determine how PSAPs affect listening effort and speech perception in noise and 2) measure interindividual variability and identify contributing demographic and health factors. Design We used a cross-over design in which all participants were assigned to each condition. Participants Twenty-eight adults aged 60 to 87 years with normal hearing and mild hearing loss fulfilled the study requirements. Intervention In one session, speech-in-noise perception tasks were performed without PSAPs, and in the other, the tasks were performed with bilateral PSAPs. The two sessions were separated by one week, and the order of the sessions was balanced across participants. Main outcome measures In both sessions, participants performed the Quick speech-in-noise test and a word discrimination task in noise, in which their self-reported listening effort was measured. Results PSAPs use improved speech perception in noise in both tasks and reduced listening effort. There was considerable variability between individuals, with approximately 60–70% of participants showing benefit. Age, hearing and cognitive status were significant predictors of the benefits. Conclusion Not all individuals may benefit from the effect of PSAPs to the same extent at their first use, and this depends on specific health and demographic factors, particularly age, hearing, and cognitive status. These results underscore the importance of demographic and health factors in assessing the benefits of hearing amplification in older adults. Trial registration ClinicalTrials.gov, NCT05076045.

Comparative Effectiveness of Personal Sound Amplification Products Versus Hearing Aids for Unilateral Hearing Loss: A Prospective Randomized Crossover Trial

“…Notably, the limited effectiveness of PSAPs in high-frequency ranges, as previously reported, 17 19 20 21 34 35 was also observed in our study. This was particularly evident when comparing functional gain across four devices and REIG.…”

“…This supports existing research suggesting that PSAPs are less effective in environments with BN. 17 20 22 34 …”

“…Research indicates that PSAPs can be beneficial for individuals with mild to moderate sensorineural hearing loss, yet their effectiveness varies greatly among users and typically does not reach the consistent performance level of professionally fitted Has. 17 18 19 20 21 22 …”

Cognitive Hearing Science: Clinical Implications in Audiology

“…DNR may be more beneficial to those with reduced noise tolerance [124]. Perron, Lau and Alain (2023) [125] determined that 60-70 percent of older adult participants with normal to mild hearing loss showed improved SIN performance and reduced effort with PSAP use. Age, hearing loss and cognition were predictors of PSAP benefit, with those with better cognition, older age and poorer hearing showing the most benefit.…”