Speech Perception Outcome in Multiply Disabled Children Following Cochlear Implantation: Investigating a Predictive Score

 

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Background: Children with multiple disabilities account for a small percentage of implantees in a cochlear implant program, but they remain the most challenging group for which to predict benefit from the implant and for cooperation with habilitation postoperatively.

Purpose: To assess the relationship of pre-implant functional disabilities with postoperative speech perception scores and determine the feasibility of predicting outcome with a cochlear implant in a multiply disabled pediatric population.

Research Design: Retrospective cohort study.

Study Sample: Sixty-six children with a cochlear implant and at least one additional disability.

Data Collection And Analysis: We retrospectively examined the relationship between pre-implant Graded Profile Analysis (GPA) scores and postimplant speech perception scores. A pre-implant functional disability score (based on the Battelle developmental screen) was applied to the same cohort of patients and its association with postimplant speech perception scores was examined.

Results: The functional disability score significantly predicted high (k > 24) and low (k < 7) speech perception scores (p < 0.001 and p < .0001) and had excellent discrimination ability (c statistic = 0.88 and 0.93 respectively). The GPA score was not significantly associated with speech perception scores (p = 0.519 and p = 0.146) and demonstrated no ability to discriminate postimplant speech perception scores in this implant population (c statistic = 0.49 and c = 0.57).

Conclusions: Prediction of outcomes following cochlear implantation in multiply disabled children can be facilitated using this newly developed functional disability score as an adjunct to traditional candidacy assessments.