Tournament strategies in hearing aid selection

Area of Science:

• Audiology
• Hearing Science
• Biomedical Engineering

Background:

• Hearing aid selection is crucial for audiological rehabilitation.
• Elimination tournaments offer a novel approach to hearing aid selection.
• Previous research explored round robin tournaments for hearing aid comparisons.

Purpose of the Study:

• To evaluate the impact of seeding on the reliability, clinical utility, and validity of single and double elimination tournaments for hearing aid selection.
• To analyze the performance of elimination tournaments using existing paired-comparison intelligibility data.

Main Methods:

• Computer-aided simulation of single and double elimination tournaments.
• Utilized paired-comparison intelligibility judgments from 12 hearing-impaired subjects on eight homogeneous hearing aids.
• Examined all possible seedings for the eight hearing aids within the tournament structures.

Main Results:

• Group performance in elimination tournaments was reliable and correlated with objective measures like nonsense-syllable identification.
• Individual listener outcomes in tournament winner selection were unreliable and highly sensitive to seeding order.
• The similarity in intelligibility characteristics of the tested hearing aids contributed to the observed unreliability.

Conclusions:

• While elimination tournaments show promise for group-level hearing aid selection, individual listener outcomes require further refinement.
• The significant effect of seeding on individual results necessitates careful consideration and potential mitigation strategies.
• Further research is warranted to optimize elimination tournament methodologies for reliable and valid hearing aid selection.