title: The effect of cochlear implant use in postlingually deaf adults.
abstract: OBJECTIVE
  To assess the effect of the use of cochlear implants (CI) on the health status of postlingually deaf adults.
  
  
  METHODS
  Participants comprised 45 postlingually deaf adult multichannel CI users and 46 deaf candidates on the waiting list for a CI. The latter group acted as control subjects to corroborate the validity of retrospective completion of the questionnaires by the CI recipients. Three HRQOL instruments were used: a) a specially developed CI questionnaire (NCIQ); b) a generic HRQOL questionnaire (SF-36); and c) a health-state classification system (HUI-2) suited to estimate single preference scores.
  
  
  RESULTS
  Retrospectively estimated pre-implant scores in the CI user group corresponded very well with the scores in the control group. Postimplant scores in the CI users were substantially higher in all six domains (p < .001) of the NCIQ than the scores in the control group. Effects due to a CI were also observed with the SF-36 in five of the seven domains (p < .01). Statistically significant differences between the two groups (p = .001) were observed in two of the six domains of the HUI-2.
  
  
  CONCLUSIONS
  All three questionnaires detected improvements in HRQOL due to CI use. To make a detailed assessment of the effect of a CI on functional outcomes and well-being, a special purpose HRQOL instrument is far more adequate than a general HRQOL instrument. This study also showed that a CI affects several other health domains besides auditory performance. The effect of CI use on general functioning and well-being proved to be considerable.
authors.affiliation: University Medical Centre Nijmegen.
authors.forename: P F
authors.initials: PF
authors.lastname: Krabbe
authors.forename: J B
authors.initials: JB
authors.lastname: Hinderink
authors.forename: P
authors.initials: P
authors.lastname: van den Broek
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D003054:Cochlear Implants; D018592:Cross-Over Studies; D005260:Female; D006304:Health Status; D006319:Hearing Loss, Sensorineural / Q000534:rehabilitation*; D006801:Humans; D008297:Male; D008875:Middle Aged; D017063:Outcome Assessment, Health Care; D011788:Quality of Life; D018709:Statistics, Nonparametric; D011795:Surveys and Questionnaires