• Ana Zão, Daniela Coimbra, Catarina Aguiar-Branco, Eckart Altenmüller, and Luís Azevedo.
• Faculty of Medicine, University of Porto, Porto, Portugal.
• Pain Pract. 2023 Apr 1; 23 (4): 368377368-377.

ObjectivesWe aim to assess the validity and reliability of the Musculoskeletal Pain Intensity and Interference Questionnaire for Musicians (MPIIQM) and to add to its cross-cultural adaptation process by translating, culturally adapting, and validating the MPIIQM into European Portuguese language in the population of Portuguese musicians.MethodsA Portuguese version of the MPIIQM (MPIIQM-Pt) was created through a process of forward and back translation, pilot testing, and cultural adaptation by expert panel evaluation. The psychometric evaluation was performed in a validation sample of 134 musicians, at baseline and after 7 days.ResultsThe high degree of internal consistency and the substantial test-retest reliability coefficients were demonstrated for each subscale (α = 0.896 and ICC = 0.997 for "pain intensity," and α = 0.879 and ICC = 0.999 for "pain interference," respectively). Exploratory factor analysis indicated two-factor structure (pain intensity and interference) that explained 75.5% of the variance. Both convergent and divergent validity are well demonstrated, confirming more than 90% of the previously defined hypotheses regarding correlations with other measures.DiscussionMPIIQM-Pt is the first validated questionnaire to evaluate pain among Portuguese musicians. It showed excellent psychometric properties, both in terms of internal consistency, test-retest reliability, factor analysis, and construct validity. Therefore, it is a valid and reliable tool suitable for both research and clinical practice purposes. MPIIQM-Pt will allow the development of more robust studies on pain among musicians and the improved assessment and monitoring of pain in this population, filling an important gap in this field of Pain Medicine.© 2022 World Institute of Pain.

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