Validity and reliability of a questionnaire on knowledge of cardiovascular risk factors for use in Brazil

Abstract

RESUMOO objetivo deste estudo metodológico foi realizar adaptação transcultural e validar para uso no Brasil um questionário de conhecimento dos fatores de risco cardiovascular (Q-FARCS), mudança do estilo de vida e adesão em uma amostra de ABSTRACTUsing a sample of patients with coronary artery disease, this methodological study aimed to conduct a cross-cultural adaptation and validation of a questionnaire on knowledge of cardiovascular risk factors (Q-FARCS), lifestyle changes, and treatment adherence for use in Brazil. The questionnaire has three scales: general knowledge of risk factors (RFs); specific knowledge of these RFs; and lifestyle changes achieved. Cross-cultural adaptation included translation, synthesis, back-translation, expert committee review, and pretesting. Face and content validity, reliability, and construct validity were measured. Cronbach's alpha for the total sample (n = 240) was 0.75. Assessment of psychometric properties revealed adequate face and content validity, and the construct revealed seven components. It was concluded that the Brazilian version of Q-FARCS had adequate reliability and validity for the assessment of knowledge of cardiovascular RFs. DESCRIPTORS Coronary disease Risk factors Health education Questionnaires Validation studies RESUMENEl objetivo de este estudio metodológico fue realizar la adaptación transcultural y validar para su uso en el Brasil, un cuestionario de conocimiento de los factores de riesgo cardiovascular (Q-FARCS), el cambio del estilo de vida y adhesión al tratamiento en una muestra de pacientes con enfermedad arterial coronaria. El cuestionario está dividido en tres scores: conocimiento general de los factores de riesgo; conocimiento específico y cambios en el estilo de vida. La adaptación transcultural incluyó traducción, síntesis, retro-traducción, aná-lisis por comité de especialistas y pre-test. Validez de apariencia y contenido, confiabilidad y validez de constructo fueron medidas. En la muestra total (n=240) el Alfa de Cronbach fue de 0,75. En el análisis de las propiedades psicométricas, la validez de apariencia y de contenido se mostraron adecuadas; la validez de constructo indicó siete componentes. Se concluye que la versión adaptada para el Brasil del Q-FARCS presentó adecuada confiabilidad y validez para evaluar el conocimiento de los factores de riesgo cardiovascular.

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Development and validation of an instrument to assess Brazilian healthcare professional providers’ knowledge on sickle cell disease

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Effectiveness and cost-effectiveness of a virtual community of practice to improve the empowerment of patients with ischaemic heart disease: study protocol of a randomised controlled trial

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