title: Cross-Cultural Translation, Adaptation and Reliability of the Danish M. D. Andeson Dysphagia Inventory (MDADI) in Patients with Head and Neck Cancer.
abstract: The objectives were to translate and culturally adapt the M.D. Anderson Dysphagia Inventory (MDADI) into Danish and subsequently test the reliability of the Danish version. The MDADI was translated into Danish and cross culturally adapted through cognitive interviews. The final version was test-retest evaluated in a group of head and neck cancer (HNC) patients who responded to the questionnaire twice with a mean of eight days apart. Interclass correlation coefficient, Cronbach's alpha, floor and ceiling effects, standard error of measurement and minimal detectable change were investigated. Fourteen patients were interviewed on the comprehensibility of the Danish MDADI, and all found the questionnaire meaningful, easy to understand, non-offensive and to include relevant aspects of dysphagia related to HNC. Sixty-four patients were included in the test-retest study. Especially, one item in the emotional scale (E7) appeared to be often misinterpreted, and ceiling effects were found in all four subdomains (global, emotional, functional and physical). The four subdomains and the composite score showed acceptable test-retest reliability and internal consistency in a Danish population of HNC patients. The Danish MDADI is reliable in terms of internal consistency and test-retest reproducibility and can be used in assessing the health-related quality of life in head and neck cancer patients with dysphagia.
authors.affiliation: Department of Occupational Therapy and Physiotherapy, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark. sara.vinther.fredslund@regionh.dk.
authors.forename: Sara Fredslund
authors.initials: SF
authors.lastname: Hajdú
authors.affiliation: Department of Otorhinolaryngology, Head & Neck Surgery and Audiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.
authors.forename: Christina Caroline
authors.initials: CC
authors.lastname: Plaschke
authors.affiliation: Department of Oncology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.|Unit of Survivorship Research, Danish Cancer Society Research Center, Copenhagen, Denmark.
authors.forename: Christoffer
authors.initials: C
authors.lastname: Johansen
authors.affiliation: Unit of Survivorship Research, Danish Cancer Society Research Center, Copenhagen, Denmark.
authors.forename: Susanne Oksbjerg
authors.initials: SO
authors.lastname: Dalton
authors.affiliation: Department of Otorhinolaryngology, Head & Neck Surgery and Audiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.
authors.forename: Irene
authors.initials: I
authors.lastname: Wessel
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003431:Cross-Cultural Comparison; D003680:Deglutition Disorders / Q000209:etiology / Q000523:psychology*; D003718:Denmark; D005260:Female; D006258:Head and Neck Neoplasms / Q000150:complications / Q000523:psychology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D018709:Statistics, Nonparametric; D011795:Surveys and Questionnaires / Q000592:standards*; D014177:Translations
keywords: Deglutition; Deglutition disorders; Internal consistency; MDADI; Patient reported outcome measures; Test-retest