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Updated: Mar 27, 2026
Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
Long-term Communication Outcomes for Children Receiving Cochlear Implants Younger Than 12 Months: A Multicenter Study
Shani Joy Dettman1, Richard Charles Dowell, Dawn Choo
1*University of Melbourne, HEARing CRC, Cochlear Implant Clinic, Royal Victorian Eye and Ear Hospital †University of Melbourne, HEARing CRC ‡Hear and Say Centre §The Shepherd Centre ||Cochlear Implant Clinic, Royal Victorian Eye and Ear Hospital ¶University of Melbourne, HEARing CRC #University of Melbourne, HEARing CRC, Royal Victorian Eye and Ear Hospital, East Melbourne, Victoria, Australia.
Early cochlear implantation (before 12 months) in children with severe to profound hearing loss significantly improves speech perception, language, and speech production outcomes. This supports timely intervention for optimal development.
Area of Science:
- Audiology and Speech Pathology
- Pediatric Otolaryngology
- Developmental Pediatrics
Background:
- Congenital bilateral severe to profound hearing loss affects speech and language development in children.
- Cochlear implantation is a common intervention, but optimal timing for maximizing outcomes is debated.
- Early intervention is crucial for auditory development and integration of auditory information.
Purpose of the Study:
- To examine the influence of age at cochlear implantation on speech perception, language, and speech production in a large pediatric cohort.
- To identify critical age windows for cochlear implantation to optimize developmental outcomes.
- To provide evidence-based recommendations for cochlear implant timing in pediatric cases.
Main Methods:
- A retrospective analysis of prospectively collected data from 403 children with congenital bilateral severe to profound hearing loss implanted before age 6.
- Assessment of speech perception, language skills (PLS, PPVT, CELF), and speech production (DEAP, word-intelligibility) at school entry and late primary school.
- Statistical analysis including regression, ANOVA with Tukey pairwise comparisons, and chi-square tests to evaluate the impact of age at implantation.
Main Results:
- Significant positive effects of earlier age at cochlear implantation on all measured outcomes (speech perception, language, speech production).
- Children implanted younger than 12 months (Group 1) demonstrated significantly better speech perception, language scores, and speech production accuracy compared to older groups.
- A higher percentage of children implanted before 12 months achieved language performance within the normative range by school entry.
Conclusions:
- Results strongly support cochlear implantation for children with severe to profound hearing loss at younger than 12 months of age.
- Early implantation optimizes speech perception, language acquisition, and speech production accuracy.
- Timely surgical intervention is critical for maximizing the benefits of cochlear implants in pediatric populations.
