title: Performance of 2- and 3-year-old children and prediction of 4-year from 1-year performance.
abstract: OBJECTIVE
  To examine whether children perform better when they receive cochlear implants when they are 2 to 4 years of age than when they are older, and to determine whether 4-year performance can be predicted from 1-year results.
  
  
  METHODS
  Children in two age groups (2 to 4, 4 to 9 years) were tested for performance, and the age groups were compared. Children were also tested 1 and 4 years after implantation.
  
  
  RESULTS
  The results suggest that the "implanted young" group scored higher than the "implanted old" group after 36 months, and that 1-year performance is helpful in predicting 4-year performance.
  
  
  CONCLUSIONS
  It may be desirable for children to undergo implantation when they are under 2 years of age, provided that appropriate selection criteria can be determined.
authors.affiliation: University of Iowa, Department of Otolaryngology-Head and Neck Surgery, Iowa City 52242-1078, USA.
authors.forename: R S
authors.initials: RS
authors.lastname: Tyler
authors.forename: B J
authors.initials: BJ
authors.lastname: Gantz
authors.forename: G G
authors.initials: GG
authors.lastname: Woodworth
authors.forename: H
authors.initials: H
authors.lastname: Fryauf-Bertschy
authors.forename: D M
authors.initials: DM
authors.lastname: Kelsay
mesh_terms: D002648:Child; D002675:Child, Preschool; D019929:Cochlear Implantation; D003638:Deafness / Q000601:surgery*; D006801:Humans; D011379:Prognosis; D011446:Prospective Studies; D013067:Speech Perception; D013997:Time Factors