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Gaceta médica de México
versão On-line ISSN 2696-1288versão impressa ISSN 0016-3813
Resumo
RAMIREZ-ARANDA, José M. et al. Symptom attribution in patients with medically unexplained symptoms. A scale development and validation study. Gac. Méd. Méx [online]. 2022, vol.158, n.1, pp.17-23. Epub 25-Abr-2022. ISSN 2696-1288. https://doi.org/10.24875/gmm.21000336.
Introduction:
In the care of patients with medically unexplained physical symptoms (MUPS) it is important what they think about their symptoms.
Objective:
To validate the psychometric properties of a symptom attribution scale in patients with MUPS and to verify its reliability.
Methods:
A non-probabilistic sample of 400 male and female adult patients were interviewed in the outpatient services of a family medicine hospital, 200 with MUPS and 200 with a defined organic pathology. Each group was diagnosed with defined criteria, and a scale with content and construct validity was applied by means of principal component analysis with varimax rotation.
Results:
The scale was made up of 12 items with two factors, one of symptom psychosocial attribution and others with organic attribution. The psychosocial-origin factor showed a variance of 49.7%. The goodness-of-fit test demostrated that the correlation matrix was adequate, and Bartlett’s sphericity test indicated statistical significance (p < 0.0001); Cronbach’s alpha was 0.841.
Conclusion:
The scale showed acceptable construct validity and good reliability and stability. The implications of these results for future measurement research are discussed.
Palavras-chave : Medically unexplained symptoms; Attribution style; Psychosocial; Scale.