Duration of Unilateral Auditory Deprivation Is Associated With Reduced Speech Perception After Cochlear Implantation: A Single-Sided Deafness Study
Cochlear Implants International: An Interdisciplinary Journal
Cohen, S. M., & Svirsky, M. A. (2019).
Cochlear Implants International: An Interdisciplinary Journal, 20(2), 51-56.
This systematic review investigates the impact of the duration of single-sided deafness (SSD) before cochlear implantation on speech perception in adults who are deaf or hard of hearing.
National Institute on Deafness and Other Communication Disorders, National Institutes of Health
Inception through November 3, 2017
Published studies (not further specified)
8
The amount of time an adult experiences post-lingual, single-sided deafness (SSD) prior to cochlear implantation (CI) negatively impacts their speech perception skills. "The main conclusion of these analyses is that there is a small but statistically significant decrease in speech perception outcomes (<em>P</em>=0.0048) as a function of duration of unilateral deafness" (p. 55). The authors estimated a pooled slope of -2.1 percentage points per year of unilateral hearing deprivation (95% CI = -0.66 to -3.52 percentage points per year), but they report a large amount of uncertainty about this estimate due to the small sample size and the limited data points for adults who experienced SSD for 10 years or more.
