A Preliminary Psychometric Case Study of the Music in Dementia Assessment Scales: European Portuguese Version (Midas-PT)


  • Lídia Sousa Department of Clinical Neurosciences and Mental Health. Faculty of Medicine. Porto University. Porto; Center for Health Technologies and Services Research. Porto; Psychiatry Department. Centro Hospitalar de Vila Nova de Gaia-Espinho. Vila Nova de Gaia. https://orcid.org/0000-0003-3560-9193
  • Bárbara Moura Psychiatry Department. Centro Hospitalar de Vila Nova de Gaia-Espinho. Vila Nova de Gaia. https://orcid.org/0000-0002-3916-6169
  • Orii McDermott Faculty of Medicine & Health Sciences. University of Nottingham. Nottingham. https://orcid.org/0000-0003-4685-3490
  • Lia Fernandes Department of Clinical Neurosciences and Mental Health. Faculty of Medicine. Porto University. Porto; Center for Health Technologies and Services Research. Porto; Psychiatry Department. Centro Hospitalar Universitário de S. João. Porto. https://orcid.org/0000-0002-3391-0647




Dementia/therapy, Music Therapy, Neuropsychological Tests, Portugal, Psychometrics, Reproducibility of Results, Surveys and Questionnaires


Introduction: Music in Dementia Assessment Scales (MiDAS) is a standardized outcome measure aiming to capture the effects of music-based interventions in patients with dementia. It is a unique instrument regarding its specificity, with the potential to enhance research in the field of music in dementia care. The aim of this study was to report a preliminary psychometric study of the translated and adapted instrument to European Portuguese (MiDAS-PT).
Material and Methods: Care home residents with dementia attended bi-weekly group music-based interventions, for five weeks. Intervention coordinators and care home staff completed MiDAS ratings at every session and the Quality-of-Life Scale (QoL-AD) at three time-points. Inter-rater reliability, test-retest reliability, internal consistency, concurrent validity (QoL-AD) and construct validity were evaluated.
Results: A total of 529 forms were completed (staff = 235, therapist = 294). Low therapist inter-rater and test-retest reliability, good internal consistency, low concurrent validity, and good construct validity were found. There were high factor loadings between the five MiDAS items (Interest, Response, Initiation, Involvement, and Enjoyment).
Conclusion: This preliminary investigation indicated acceptable psychometric properties on a range of attributes, but more research is needed in order to definitely establish the psychometric value of the scale.


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Gottesman RT, Stern Y. Behavioral and psychiatric symptoms of dementia and rate of decline in Alzheimer’s disease. Front Pharmacol. 2019;10:1062. DOI: https://doi.org/10.3389/fphar.2019.01062

Liperoti R, Pedone C, Corsonello A. Antipsychotics for the treatment of behavioral and psychological symptoms of dementia (BPSD). Curr Neuropharmacol. 2008;6:117-24. DOI: https://doi.org/10.2174/157015908784533860

Schneider LS, Dagerman KS, Insel P. Risk of death with atypical antipsychotic drug treatment for dementia: meta-analysis of randomized placebocontrolled trials. JAMA. 2005;294:1934-43. DOI: https://doi.org/10.1001/jama.294.15.1934

Schneider LS, Tariot PN, Dagerman KS, Davis SM, Hsiao JK, Ismail MS, et al. Effectiveness of atypical antipsychotic drugs in patients with Alzheimer’s disease. N Engl J Med. 2006;355:1525-38. DOI: https://doi.org/10.1056/NEJMoa061240

Ballard C, Waite J. The effectiveness of atypical antipsychotics for the treatment of aggression and psychosis in Alzheimer’s disease. Cochrane Database Syst Rev. 2006;1:CD003476. DOI: https://doi.org/10.1002/14651858.CD003476.pub2

Gallini A, Andrieu S, Donohue JM, Oumouhou N, Lapeyre-Mestre M, Gardette V. Trends in use of antipsychotics in elderly patients with dementia: impact of national safety warnings. Eur Neuropsychopharmacol. 2014;24:95-104. DOI: https://doi.org/10.1016/j.euroneuro.2013.09.003

McConnell ES, Karel MJ. Improving management of behavioral and psychological symptoms of dementia in acute care: evidence and lessons learned from across the care spectrum. Nurs Adm Q. 2016;40:244-54. DOI: https://doi.org/10.1097/NAQ.0000000000000167

Foebel AD, Onder G, Finne-Soveri H, Lukas A, Denkinger MD, Carfi A, et al. Physical restraint and antipsychotic medication use among nursing home residents with dementia. J Am Med Dir Assoc. 2016;17:184.e9-14. DOI: https://doi.org/10.1016/j.jamda.2015.11.014

Smeets CH, Gerritsen DL, Zuidema SU, Teerenstra S, van der Spek K, Smalbrugge M, et al. Psychotropic drug prescription for nursing home residents with dementia: prevalence and associations with non-resident-related factors. Aging Ment Health. 2018;22:1239-46. DOI: https://doi.org/10.1080/13607863.2017.1348469

International Psychogeriatric Association. The IPA Complete Guides to BPSD. 2012. [cited 2021 Dec 12]. Available from: https://www.ipa-online.org/publications/guides-to-bpsd.

Kales HC, Gitlin LN, Lyketsos CG. Assessment and management of behavioral and psychological symptoms of dementia. BMJ. 2015;350:h369. DOI: https://doi.org/10.1136/bmj.h369

National Institute for Health and Care Excelence. Dementia: supporting people with dementia and their carers in health and social care - Clinical Guideline. London: NICE; 2006.

Reus VI, Fochtmann LJ, Eyler AE, Hilty DM, Horvitz-Lennon M, Jibson MD, et al. The American Psychiatric Association practice guideline on the use of antipsychotics to treat agitation or psychosis in patients with dementia. Am J Psychiatry. 2016;173:543-6. DOI: https://doi.org/10.1176/appi.ajp.2015.173501

Abraha I, Rimland JM, Trotta FM, Dell’Aquila G, Cruz-Jentoft A, Petrovic M, et al. Systematic review of systematic reviews of non-pharmacological interventions to treat behavioural disturbances in older patients with dementia. The SENATOR-OnTop series. BMJ Open. 2017;7:e012759. DOI: https://doi.org/10.1136/bmjopen-2016-012759

Chang YS, Chu H, Yang CY, Tsai JC, Chung MH, Liao YM, et al. The efficacy of music therapy for people with dementia: a meta-analysis of randomised controlled trials. J Clin Nurs. 2015;24:3425-40. DOI: https://doi.org/10.1111/jocn.12976

Livingston G, Kelly L, Lewis-Holmes E, Baio G, Morris S, Patel N, et al. Non-pharmacological interventions for agitation in dementia: systematic review of randomised controlled trials. Br J Psychiatry. 2014;205:436-42. DOI: https://doi.org/10.1192/bjp.bp.113.141119

McDermott O, Charlesworth G, Hogervorst E, Stoner C, Moniz-Cook E, Spector A, et al. Psychosocial interventions for people with dementia: a synthesis of systematic reviews. Aging Ment Health. 2019;23:393-403. DOI: https://doi.org/10.1080/13607863.2017.1423031

McDermott O, Crellin N, Ridder HM, Orrell M. Music therapy in dementia: a narrative synthesis systematic review. Int J Geriatr Psychiatry. 2013;28:781-94. DOI: https://doi.org/10.1002/gps.3895

van der Steen JT, Smaling HJ, van der Wouden JC, Bruinsma MS, Scholten RJ, Vink AC. Music-based therapeutic interventions for people with dementia.Cochrane Database Syst Rev. 2018;7:CD003477. DOI: https://doi.org/10.1002/14651858.CD003477.pub4

Vink A, Hanser S. Music-based therapeutic interventions for people with dementia: a mini-review. Medicines. 2018;5:109. DOI: https://doi.org/10.3390/medicines5040109

Vasionyte I, Madison G. Musical intervention for patients with dementia: a meta-analysis. J Clin Nurs. 2013;22:1203-16. DOI: https://doi.org/10.1111/jocn.12166

Ueda T, Suzukamo Y, Sato M, Izumi S. Effects of music therapy on behavioral and psychological symptoms of dementia: a systematic review and metaanalysis. Ageing Res Rev. 2013;12:628-41. DOI: https://doi.org/10.1016/j.arr.2013.02.003

Robb SL, Burns DS, Carpenter JS. Reporting guidelines for music-based interventions. Music Med. 2011;3:271-9. DOI: https://doi.org/10.1177/1943862111420539

Sousa L, Neves MJ, Moura B, Schneider J, Fernandes L. Music-based interventions for people living with dementia, targeting behavioral and psychological symptoms: a scoping review. Int J Geriatr Psychiatry. 2021;36:1664-90. DOI: https://doi.org/10.1002/gps.5568

McDermott O, Orrell M, Ridder HM. The development of Music in Dementia Assessment Scales (MiDAS). Nord J Music Ther. 2015;24:232-51. DOI: https://doi.org/10.1080/08098131.2014.907333

Sousa L, Moura B, McDermott O, Fernandes L. Portuguese translation and cultural adaptation of the Music in Dementia Assessment Scales (MiDAS). Nord J Music Ther. 2022;31:89-101. DOI: https://doi.org/10.1080/08098131.2021.1915856

Logsdon RG, Gibbons LE, McCurry SM, Teri L. Quality of life in Alzheimer’s disease: patient and caregiver reports. J Ment Health Aging. 1999;5:21-32. DOI: https://doi.org/10.1037/t03352-000

McDermott O, Orgeta V, Ridder HM, Orrell M. A preliminary psychometric evaluation of Music in Dementia Assessment Scales (MiDAS). Int Psychogeriatr. 2014;26:1011-9. DOI: https://doi.org/10.1017/S1041610214000180

McGraw KO, Wong SP. Forming inferences about some intraclass correlation coefficients. Psychol Methods. 1996;1:30-46. DOI: https://doi.org/10.1037/1082-989X.1.1.30

Bartlett MS. A note on the multiplying factors for various χ2 approximations. J R Stat Soc Series B Stat Methodol. 1954;16:296-8. DOI: https://doi.org/10.1111/j.2517-6161.1954.tb00174.x

Field A. Exploratory factor analysis. Discovering statistics using SPSS. 3rd ed. London: Sage; 2009.

Jakobsen JC, Gluud C, Wetterslev J, Winkel P. When and how should multiple imputation be used for handling missing data in randomised clinical trials – a practical guide with flowcharts. BMC Med Res Methodol. 2017;17:162. DOI: https://doi.org/10.1186/s12874-017-0442-1

Pallant J. SPSS survival manual. Maidenhead: Open University Press; 2005.

MacCallum RC, Widaman KF, Zhang S, Hong S. Sample size in factor analysis. Psychol Methods. 1999;4:84-99. DOI: https://doi.org/10.1037/1082-989X.4.1.84

Tan J, Wee SL, Yeo PS, Choo J, Ritholz M, Yap P. A new music therapy engagement scale for persons with dementia. Int Psychogeriatr. 2019;31:49-58. DOI: https://doi.org/10.1017/S1041610218000509




How to Cite

Sousa L, Moura B, McDermott O, Fernandes L. A Preliminary Psychometric Case Study of the Music in Dementia Assessment Scales: European Portuguese Version (Midas-PT). Acta Med Port [Internet]. 2023 Jan. 13 [cited 2024 Jul. 25];36(11):731-9. Available from: https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/18763