The relation of hearing-specific patient-reported outcome measures with speech perception measures and acceptable noise levels in cochlear implant users

Abstract

Objective: To investigate the relation of a hearing-specific patient-reported outcome measure (PROM) with speech perception and noise tolerance measurements. It was hypothesised that speech intelligibility in noise and noise tolerance may explain a larger part of the variance in PROM scores than speech intelligibility in quiet.

Design: This cross-sectional study used the Speech, Spatial, Qualities (SSQ) questionnaire as a PROM. Speech recognition in quiet, the Speech Reception Threshold in noise and noise tolerance as measured with the acceptable noise level (ANL) were measured with sentences.

Study sample: A group of 48 unilateral post-lingual deafened cochlear implant (CI) users.

Results: SSQ scores were moderately correlated with speech scores in quiet and noise, and also with ANLs. Speech scores in quiet and noise were strongly correlated. The combination of speech scores and ANL explained 10–30% of the variances in SSQ scores, with ANLs adding only 0–9%.

Conclusions: The variance in the SSQ as hearing-specific PROM in CI users was not better explained by speech intelligibility in noise than by speech intelligibility in quiet, because of the remarkably strong correlation between both measures. ANLs made only a small contribution to explain the variance of the SSQ. ANLs seem to measure other aspects than the SSQ.

Keywords:

• Cochlear implant
• speech intelligibility
• noise
• acceptable noise level
• speech reception threshold test
• surveys and questionnaires

Author contributions

G.D. and A.G. designed the study, G.D. did the analyses, and drafted the manuscript. A.G. revised the manuscript. Both authors approved the final version of the manuscript for submission.

Disclosure statement

The authors declared no potential conflicts of interest with respect to the research, authorship and/or publication of this article.

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.