title: Residual speech recognition and cochlear implant performance: effects of implantation criteria.
abstract: OBJECTIVE
  This study aimed to determine the effects of preoperative speech reception on postoperative speech recognition with a cochlear implant and to develop a statistical index allowing prediction of postoperative speech recognition before implantation.
  
  
  METHODS
  The study design was a retrospective case review with statistical modeling.
  
  
  METHODS
  The study was conducted at a tertiary referral center with an associated Veteran's Administration hospital.
  
  
  METHODS
  Postlingually deafened adults with and without residual speech reception participated.
  
  
  METHODS
  Cochlear implantation with Cochlear Corporation CI-22 and CI-24 devices was performed.
  
  
  METHODS
  Monosyllabic word recognition was measured.
  
  
  RESULTS
  Duration of deafness and preoperative sentence recognition are both significant predictors of word recognition with a cochlear implant and can account for 80% of the variance in word recognition.
  
  
  CONCLUSIONS
  Cochlear implant outcomes are variable but predictable within specific ranges.
authors.affiliation: Department of Otolaryngology - Head & Neck Surgery, The University of Iowa Hospitals and Clinics, Iowa City 52242, USA.
authors.forename: J T
authors.initials: JT
authors.lastname: Rubinstein
authors.forename: W S
authors.initials: WS
authors.lastname: Parkinson
authors.forename: R S
authors.initials: RS
authors.lastname: Tyler
authors.forename: B J
authors.initials: BJ
authors.lastname: Gantz
mesh_terms: D000328:Adult; D019929:Cochlear Implantation / Q000295:instrumentation*; D003638:Deafness / Q000601:surgery*; D004867:Equipment Design; D006309:Hearing / Q000502:physiology; D006801:Humans; D008954:Models, Biological; D011379:Prognosis; D012189:Retrospective Studies; D013067:Speech Perception / Q000502:physiology*; D013997:Time Factors; D016896:Treatment Outcome