title: Danish VISA-A questionnaire with validation and reliability testing for Danish-speaking Achilles tendinopathy patients.
abstract: The VISA-A questionnaire has proven to be a valid and reliable tool for assessing severity of Achilles tendinopathy (AT). The aim was to translate and cross-culturally adapt the VISA-A questionnaire for a Danish-speaking AT population, and subsequently perform validity and reliability tests. Translation and following cross-cultural adaptation was performed as translation, synthesis, reverse translation, expert review, and pretesting. The final Danish version (VISA-A-DK) was tested for reliability on healthy controls (n = 75) and patients (n = 36). Tests for internal consistency, validity, and structure were performed on 71 patients. VISA-A-DK showed good reliability for patients (r = 0.80 ICC = 0.79) and healthy individuals (r = 0.98 ICC = 0.97). Internal consistency was 0.73 (Cronbach's alpha). The mean VISA-A-DK score in AT patients was 51 [47-55]. This was significantly lower than healthy controls with a score of 93 (90-95). Criterion validity was considered good when comparing the scores of the Danish version with the original version in both healthy individuals and patients. VISA-A-DK is a valid and reliable instrument and has shown compatible to the original version in assessment of AT patients. VISA-A-DK is a useful tool in the assessment of AT, both in research and in a clinical setting.
authors.affiliation: Department of Orthopaedic Surgery, Bispebjerg University Hospital, Copenhagen, Denmark.
authors.forename: J V
authors.initials: JV
authors.lastname: Iversen
authors.affiliation: The Parker Institute, Copenhagen University Hospital, Frederiksberg, Denmark.
authors.forename: E M
authors.initials: EM
authors.lastname: Bartels
authors.affiliation: Physical Therapy Private Practice, Aalborg, Denmark.
authors.forename: J E
authors.initials: JE
authors.lastname: Jørgensen
authors.affiliation: Department of Orthopaedic Surgery, University Hospital of Århus, Århus, Denmark.
authors.forename: T G
authors.initials: TG
authors.lastname: Nielsen
authors.affiliation: Department of Orthopaedic Surgery, University Hospital of Århus, Århus, Denmark.
authors.forename: C
authors.initials: C
authors.lastname: Ginnerup
authors.affiliation: Department of Orthopaedic Surgery, University Hospital of Århus, Århus, Denmark.
authors.forename: M C
authors.initials: MC
authors.lastname: Lind
authors.affiliation: Section of Social Medicine, Department of Public Health, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
authors.forename: H
authors.initials: H
authors.lastname: Langberg
mesh_terms: D000125:Achilles Tendon / Q000503:physiopathology*; D000328:Adult; D016022:Case-Control Studies; D054521:Cultural Competency; D012090:Cumulative Trauma Disorders / Q000175:diagnosis / Q000503:physiopathology; D003718:Denmark; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires; D052256:Tendinopathy / Q000175:diagnosis / Q000503:physiopathology*; D014177:Translations
keywords: Cross-cultural; adaptation; translation