Adaptation and validation study of the Beliefs about Medicines Questionnaire in psychiatric outpatients in a community mental health setting

Authors

  • Carlos De las Cuevas,

    Corresponding author
    1. CIBER en Epidemiologia y Salud Pública (CIBERESP), Tenerife, Spain
    • Department of Psychiatry, University of La Laguna, Tenerife, Spain
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  • Amado Rivero-Santana,

    1. Evaluation Unit of the Canary Islands Health Service (SESCS), Tenerife, Spain
    2. Canary Islands Foundation of Health and Research (FUNCIS), Tenerife, Spain
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  • Lilisbeth Perestelo-Perez,

    1. CIBER en Epidemiologia y Salud Pública (CIBERESP), Tenerife, Spain
    2. Evaluation Unit of the Canary Islands Health Service (SESCS), Tenerife, Spain
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  • Marien Gonzalez-Lorenzo,

    1. Evaluation Unit of the Canary Islands Health Service (SESCS), Tenerife, Spain
    2. Canary Islands Foundation of Health and Research (FUNCIS), Tenerife, Spain
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  • Jeanette Perez-Ramos,

    1. Evaluation Unit of the Canary Islands Health Service (SESCS), Tenerife, Spain
    2. Canary Islands Foundation of Health and Research (FUNCIS), Tenerife, Spain
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  • Emilio J. Sanz

    1. Department of Clinical Pharmacology, University of La Laguna, Tenerife, Spain
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C. De las Cuevas, Department of Psychiatry, University of La Laguna, School of Medicine, Campus de Ofra s/n, 38071 San Cristóbal de La Laguna, Canary Islands, Spain. Tel: +34 609521405; Fax: +34 922319353. E-mail: cdelascuevas@gmail.com

Abstract

Purpose

The present study aims to establish the factor structure and reliability of the Spanish version of the Beliefs about Medicines Questionnaire (BMQ), adapted to psychiatric medication, and to analyze the potential differences between psychiatric outpatients, medical students, and psychology students.

Method

The BMQ was tested on a sample of 405 psychiatric outpatients, 216 medical students, and 222 psychology students. Students completed only the BMQ-General scale, adapted for psychiatric medication, and patients completed also the BMQ-Specific scale.

Results

For the BMQ-General scale adapted items, the analysis shows a two-factor structure similar to that described for the Spanish validation of the original instrument, but when samples are analyzed separately, relevant differences are observed in the composition of the factor structures. Furthermore, the resulting scales show a medium–low internal consistency. For BMQ-Specific scale items, the results replicate previous data. Medical students tend to consider psychiatric medication as less harmful and less likely to be overprescribed than psychology students, with patients' scores in the middle of both groups.

Conclusion

The BMQ-Specific scale has satisfactory psychometric properties for use in psychiatric outpatients in a community mental health setting. The adapted Spanish BMQ-General scale for psychotropics identified three different structures of the factors for each of the three samples studied. Copyright © 2011 John Wiley & Sons, Ltd.

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