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Study of the Psychometric Properties of the Diabetes Empowerment Scale Short Form (DES-SF)
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Advisor(s)
Abstract(s)
Introdução: O controlo da diabetes mellitus tipo 2 implica
que as pessoas se envolvam ativamente em comportamentos
de autocuidado, sendo a autoeficácia uma das
variáveis que interfere nesse processo. Baseada no Modelo
de Mudança Comportamental a Diabetes Empowerment
Scale avalia a autoeficácia psicossocial em pessoas
portadoras desta doença. Este estudo tem como objetivo
analisar as propriedades psicométricas da versão portuguesa
da Escala do Empowerment na Diabetes – versão
reduzida (DES-SF), nomeadamente a sua fidelidade e validade.
Método: Desenvolvemos um estudo de cariz
metodológico, com uma amostra de conveniência de 123
participantes com diabetes mellitus tipo 2 que, em contexto
dos cuidados de saúde primários, preencheram a
DES-SF, a Escala do Autocuidado na Diabetes e um questionário
sociodemográfico e clínico. Para avaliar a estabilidade
temporal, a escala da autoeficácia foi novamente
preenchida após 4 semanas, por uma subamostra de 23
desses participantes. Resultados: O estudo revelou boa
consistência interna (alfa de Cronbach de 0.83) e estabilidade
temporal (r = 0.532, p = 0.009) da DES-SF. Os índices
de ajustamento, da análise fatorial confirmatória, sugerem
a natureza unidimensional da escala. Verificamos
uma associação positiva entre a autoeficácia e a escolaridade
(r = 0.209, p = 0.020) e os comportamentos de autocuidado,
nomeadamente a dieta (r = 0.221, p = 0.023) e o
exercício físico (r = 0.296, p = 0.002). Conclusão: A DES-SF
revelou ser uma medida fiável e válida, podendo ser utilizado
em contexto da prática clínica ou em estudos de
investigação, na população portuguesa.
Introduction: The control of diabetes mellitus type 2 implies that people are actively engaged in self-care behaviours and self-efficacy is one of the variables involved in this process. Based on the Model of Behavioural Change, the Diabetes Empowerment Scale assesses the psychosocial self-efficacy of people with this disease. The aim of this study is to analyse the psychometric properties of the Portuguese version of the Diabetes Empowerment Scale (DES-SF), namely its reliability and validity. Method: A methodological nature study was conducted, with a convenience sample comprising 123 participants with diabetes mellitus type 2. In a primary health care context, the participants were asked to fill the DES-SF, the Diabetes Self-care Scale, and a sociodemographic and clinical questionnaire. Four weeks later and in order to evaluate stability over time, the self-efficacy scale was administered to a sub-sample comprised of 23 of these participants. Results: The study showed good internal consistency (Cronbach’s alpha coefficient of 0.83) and stability over time (r = 0.532, p = 0.009) of the DES-SF. The adjustment indices of the confirmatory factor analysis suggested the unidimensional nature of the scale. A positive association was found between self-efficacy and schooling (r = 0.209, p = 0.020), and self-care behaviours, in particular dietary (r = 0.221, p = 0.023) and physical exercise (r = 0.296, p = 0.002). Conclusion: Reliability and validity of the DES-SF was confirmed, which demonstrates its usefulness in the context of clinical practice or in research studies involving the Portuguese population.
Introduction: The control of diabetes mellitus type 2 implies that people are actively engaged in self-care behaviours and self-efficacy is one of the variables involved in this process. Based on the Model of Behavioural Change, the Diabetes Empowerment Scale assesses the psychosocial self-efficacy of people with this disease. The aim of this study is to analyse the psychometric properties of the Portuguese version of the Diabetes Empowerment Scale (DES-SF), namely its reliability and validity. Method: A methodological nature study was conducted, with a convenience sample comprising 123 participants with diabetes mellitus type 2. In a primary health care context, the participants were asked to fill the DES-SF, the Diabetes Self-care Scale, and a sociodemographic and clinical questionnaire. Four weeks later and in order to evaluate stability over time, the self-efficacy scale was administered to a sub-sample comprised of 23 of these participants. Results: The study showed good internal consistency (Cronbach’s alpha coefficient of 0.83) and stability over time (r = 0.532, p = 0.009) of the DES-SF. The adjustment indices of the confirmatory factor analysis suggested the unidimensional nature of the scale. A positive association was found between self-efficacy and schooling (r = 0.209, p = 0.020), and self-care behaviours, in particular dietary (r = 0.221, p = 0.023) and physical exercise (r = 0.296, p = 0.002). Conclusion: Reliability and validity of the DES-SF was confirmed, which demonstrates its usefulness in the context of clinical practice or in research studies involving the Portuguese population.
Description
Keywords
Diabetes mellitus Empowerment Self-efficacy Validation study
Pedagogical Context
Citation
Publisher
Escola Nacional de Saúde Pública (ENSP-NOVA)