title: Translation of the international outcome inventory for hearing aids into Portuguese from Portugal.
abstract: To translate the International Outcome Inventory for Hearing Aids (IOI-HA) Questionnaire from English to Portuguese (from Portugal) and to validate this instrument of study on the Portuguese population.
  
  
  
  In this prospective study, a translation from English into Portuguese of the IOI-HA was performed, and linguistic adaptation and counter translation were also accomplished. The data were analysed for internal consistency testing for correlations between each individual item and the total score of the IOI-HA, assessing the Cronbach α and performing test-retest analysis.
  
  
  
  80 hearing aid users aged 18 years or older were recruited from an ear, nose and throat (ENT) appointment in Coimbra's hospital, Portugal. 84% of the participants were unilateral hearing aid users, whereas 16% were bilateral users.
  
  
  
  The patients volunteered to answer the questionnaire during an ENT appointment. All of the patients had been using the hearing aids for more than 3 years.After the first application of the questionnaire, a new appointment was planned for retesting, within at least 7 days to no more than 60 days. 29 participants answered the questionnaire again according to the same procedure.
  
  
  
  The mean IOI-HA total score in the study population was 27.33±4.93 (9-35). The mean values obtained for each item of the questionnaire ranged from 3.19 to 4.54. The Cronbach α was 0.838 and the Cronbach α values when the item was removed, were also significantly strong. The test-retest analysis revealed no differences between the paired groups.
  
  
  
  In the present study a valid and reliable translation and adaptation of the IOI-HA into Portuguese from Portugal is proposed. This tool will be available for clinical assessment of hearing aid users.
authors.affiliation: Department of Otorhinolaryngology, Coimbra Hospital and University Centre, Coimbra, Portugal.
authors.forename: Sofia M M
authors.initials: SM
authors.lastname: Paiva
authors.affiliation: Department of Otorhinolaryngology, Coimbra Hospital and University Centre, Coimbra, Portugal.
authors.forename: João F C P M
authors.initials: JF
authors.lastname: Simões
authors.affiliation: Department of Otorhinolaryngology, Coimbra Hospital and University Centre, Coimbra, Portugal.
authors.forename: António M Diogo
authors.initials: AM
authors.lastname: Paiva
authors.affiliation: Department of General Surgery, Coimbra Hospital and University Centre, Coimbra, Portugal.
authors.forename: Francisco J F Castro E
authors.initials: FJ
authors.lastname: Sousa
authors.affiliation: Department of Otorhinolaryngology, Clinique Universitaire ORL de Bordeaux II, Bordeaux, France.
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Bébéar
mesh_terms: D000368:Aged; D005260:Female; D006310:Hearing Aids; D006801:Humans; D007802:Language; D008297:Male; D017063:Outcome Assessment, Health Care / Q000379:methods*; D017060:Patient Satisfaction / Q000706:statistics & numerical data*; D011174:Portugal; D011446:Prospective Studies; D011594:Psychometrics; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires / Q000592:standards*; D014175:Translating
keywords: GERIATRIC MEDICINE