Predictors of Entering a Hearing Aid Evaluation Period: A Prospective Study in Older Hearing-Help Seekers.

The study was observational, so it shows which factors were associated with entering the evaluation period, not that changing those factors would cause someone to enter. It was conducted in the Netherlands, where the evaluation period is two months, noncommittal, and free; the results may not apply where trial periods are shorter, paid, or tied to purchase. Participants were age 55 or older, had never used a hearing aid, and had hearing losses considered non-complex, so it does not tell clinicians about younger adults, experienced hearing aid users, or people with complex hearing problems. The final models did not use all 377 participants: the gender-specific model analysed 351 and the readiness-specific model analysed 334 because of missing values. The scale for expected hearing aid sound quality and cost was excluded because it did not behave as a reliable measure in this sample, so those barriers were not tested. The models were only internally validated in the same sample; no external validation in new clinics or countries was done. Source of recruitment was strongly linked to entering, especially whether a hearing aid dispenser had an intake appointment scheduled, so the care pathway may be as important as patient factors. Many novel predictors were tested, and none added significant predictive value, but the study still relied on self-reported expectations before the person had experience with a hearing aid.

Do not treat these predictors as a clinical prediction rule that will work outside this Dutch setting. The study was observational, used first-time hearing aid candidates age 55 or older, and only internally validated the models; it did not show that changing benefits, stigma, social pressure, or readiness causes someone to enter an evaluation period.