Linguistic and psychometric validation of the French version of the COSI questionnaire (Client-Oriented Scale of Improvement) assessing perceived improvement with hearing aids.
✦ Clinical Takeaway ✦
French-speaking audiology clinics can now use a validated French COSI; no change in practice is needed for clinics already operating in other languages.
✦ Why It Matters ✦
A validated French COSI expands outcome measurement capacity to French-speaking populations, supporting patient-centred audiological rehabilitation research and clinical audits.
✦ Key Points ✦
- 01COSI translated into French and subjected to psychometric validation.
- 02Published in European Annals of Otorhinolaryngology, Head and Neck Diseases (2026).
- 03Validation ensures the tool reliably measures patient-reported hearing improvement goals.
- 04Broadens availability of a widely used patient-centred outcome measure to Francophone populations.
- 05No changes to existing COSI content; only language adaptation assessed.
✦ Claims & Evidence ✦
ClaimEvidenceSupport
The French translation of the COSI demonstrates adequate psychometric validity and reliability.
studypartially supported✦ Research metadata ✦
- PMID
- 42251020
- DOI
- 10.1016/j.anorl.2026.05.008.
- Journal
- European Annals of Otorhinolaryngology, Head and Neck Diseases
- Publication type
- research_article
- Evidence level
- 4
- Population
- French-speaking hearing-aid users or patients undergoing audiological rehabilitation
- Intervention
- French translation and psychometric validation of the COSI questionnaire
Primary outcomes
Psychometric validity of the French COSI; Reliability of the French COSI