International Journal of Psychology and Psychological Therapy

Volume 22 Num. 1 - March 2022


Psychometric Properties of the Beliefs About Medicines Questionnaire (BMQ) in Mexican Adults with Asthma

Volume 22 Num. 1 - March 2022 - Pages 33-43


Isaias Vicente Lugo Gonzalez , Fabiola Gonzalez Betanzos , Silvia Susana Robles Montijo , Cynthia Zaira Vega Valero


It has been identified that the treatment perception is associated with adherence behaviors and the clinical results in chronic diseases, hence the importance of having instruments to evaluate this variable. This work sought to evaluate the psychometric properties of the Spanish version of the Medication Belief Questionnaire (BMQ) in a clinical sample of 310 Mexican adults with asthma (74.2% women, Mage= 43.98, SD= 14.712). Six structural models are compared, including the original and the adaptation to Spanish. The results show a better fit to a model of three correlated factors (Necessity, Concern and Harm) with an excellent fit (χ2= 143.791. g= 87, p >.001, CFI= .967, TLI= .961, RMSEA= .05). Evidence of convergent and criterion validity with treatment adherence was obtained, corroborating the relationship between positive treatment perception and adherence behaviors (r= .421, p <.001) and negative treatment perception and non-adherence (r= -.223, p <.001). Furthermore, it was identified that patients with a positive treatment perception are more adherent than those with a negative treatment perception (χ2= 13.645, p <.001, OR= 2.462 [CI= 1.518-3.991]). It is concluded that the BMQ is a reliable and valid instrument to evaluate the treatment perception in Mexican patients with asthma, in addition to being sensitive to detect adherent and non-adherent patients.

How to cite this paper:
Lugo-González IV, González-Betanzos F, Robles-Montijo SS, & Vega-Valero CZ (2022). Psychometric properties of the Beliefs about Medicines Questionnaire (BMQ) in Mexican adults with asthma. International Journal of Psychology & Psychological Therapy, 22, 1, 33-43.

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