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Clin Otolaryngol ; 41(5): 585-92, 2016 Oct.
Article in English | MEDLINE | ID: mdl-26493690

ABSTRACT

OBJECTIVE: Outcomes in speech perception following cochlear implantation in adults vary widely. Many studies have been carried out to identify and quantify factors that influence outcomes. This study adds a new dimension to pre-existing literature. DESIGN: Single-centre retrospective cohort study. SETTING: University Medical Center Utrecht, the Netherlands. PARTICIPANTS: A total of 428 adults with bilateral severe-to-profound sensorineural hearing loss, unilaterally implanted between February 1988 and March 2014. MAIN OUTCOME MEASURES: Univariable and multivariable linear regression analyses were carried out to identify factors that may influence outcome after cochlear implantation. Consonant-vowel-consonant word scores were recorded pre- and post-implant and were used as outcome measure in two groups of patients (prelingually and postlingually deafened adults). As an added dimension, multiple imputation was implemented and evaluated to tackle 4% (17/407) missing data. RESULTS: For postlinguals, pre-implant speech perception score and age at onset of deafness are positive predictors and meningitis and otosclerosis as cause of deafness are negative predictors of post-implant speech perception. This model accounted for 26% of variance. For prelinguals, pre-implant speech perception score is the only strong positive predictor (ß 0.524; P < 0.001). This model accounted for 31% of variance. Age at implantation was not a significant predictor in either group. CONCLUSIONS: Speech perception is predicted by pre-implant speech perception, age at onset of deafness and aetiology (meningitis and otosclerosis) for postlinguals and solely pre-implant speech perception for prelinguals. Age at implantation is of lesser importance in predicting speech perception outcome post-implant. Multiple imputation is a useful statistical technique when analysing incomplete data sets.


Subject(s)
Cochlear Implantation , Hearing Loss, Sensorineural/surgery , Adolescent , Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Retrospective Studies , Speech Perception , Treatment Outcome
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