AbstractBackgroundMusic in Dementia Assessment Scales (MiDAS) is an observational, dementia‐specific, visual analogue scale, developed to measure musical experiences of patients with dementia (PwD). Derived from qualitative data of focus groups and interviews with PwD, carers, care home staff, and music therapists, it revealed acceptable to good psychometric properties in a preliminary study. We aim to describe the translation and cultural adaptation of MiDAS to European Portuguese, and the results of a preliminary psychometric evaluation.MethodA rigorous ten step approach, suggested by the authors of MiDAS, was followed, for translation and cultural adaptation. It included: two forward translations and a back translation by a bilingual professional translator; harmonization with versions in different languages; testing and debriefing the final version with health professionals.For the psychometric study, care home residents with dementia attended a bi‐weekly group music‐based intervention (Mbi), for up to ten sessions. Intervention coordinators and care home staff completed MiDAS ratings at every session and the Quality‐of‐Life Scale (QoL‐AD) was completed at three time‐points. Inter‐rater and test‐retest reliability, internal consistency, concurrent and construct validity of MiDAS were evaluated.ResultNo major changes have been made to the actual content of MiDAS. Minor adjustments were made in wording and additional instruction details were added, to increase clarity and adequacy to the Portuguese setting.A total of 529 MiDAS‐PT forms (Staff = 235, Therapist = 294) were completed during the psychometric study. Our analysis indicated low therapist inter‐rater and test‐retest reliability, good internal consistency, low concurrent validity, and good construct validity. High factor loadings between the five MiDAS items (Interest, Response, Initiation, Involvement, and Enjoyment) were found.ConclusionOverall, Portuguese health professionals considered MIDAS‐PT user friendly and intuitive in terms of content and structure. More research is needed, with a larger sample, providing a more in‐depth psychometric characterization.
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