Representações de doença, espriritualidade e adesão ao tratramentos em pacientes com diagnóstico de esquizofrenia

Esta investigação tem como objetivo estudar as representações de doença em pacientes com o diagnóstico de esquizofrenia e a forma como estas são varáveis preditoras da adesão ao tratamento. Este estudo teve como base o modelo de auto­regulação de Leventhal, que tem sido largamente aplicado à doença física e começa a dar os primeiros passos em trabalhos a nível da saúde mental. A investigação empírica deste trabalho foi assim conduzida tendo em conta o papel ativo que os sujeitos possuem na elaboração das suas próprias doenças. O estudo consistiu na aplicação de questionários de perceção de doença (IPQS), Crenças sobre os medicamentos (BMQ) adesão ao tratamento (RAM) e espiritualidade. Os resultados demonstram que algumas representações de doença são preditoras significativas da adesão ao tratamento. Também as crenças acerca dos medicamentos possuem um efeito preditor ainda que de uma forma menos acentuada. A interação entre representações de doença e crenças espirituais também possuem efeitos preditores na adesão ao tratamento. /ABSTRACT: This study has the objective of make an approach about the illness perceptions of patients with the diagnosis of schizophrenia and the way by witch this variable are predictors of treatment adherence. Using the model of self-regulation of Leventhal, that has been largely applied to physical disease and starts now to develop investigations in the area of mental health problems. The empirical investigation has been conducted having in mind the active role that subjects have in elaborating their own diseases. The present study was made by means of application of the disease illness perception questionnaire (IPQS), beliefs about medicines (BMQ), treatment adherence (RAM) and spirituality. Our results show that some illness cognitions are significative predictors of treatment adherence, as well as the beliefs about medicines have a predictive effect but in a less strong way. Also the interactions between illness representations and spiritual beliefs have predicted the treatment adherence.

VALIDATION STUDY OF HEALTH BELIEFS SCALE

Introduction: The Health Belief Scale is a questionnaire used to assess a wide range of beliefs related to health. The objective of this study was to undertake construction and culturally adapt the Health Belief Scale (HBS) to the Portuguese language and to test its reliability and validity. Methods: This new version was obtained with forward/backward translations, consensus panels and a pre-test, having been inspired by some of the items from “Canada’s Health Promotion Survey” and the “European Health and Behaviour Survey”, with the inclusion of new items about food-related beliefs. The Portuguese version of Health Belief Scale and a form for the characteristics of the participants were applied to 849 Portuguese adolescents. Results: Reliability was good with a Cronbach’s alpha coeficient of 0.867, and an intraclass correlation coeficient (ICC) of 0.95. Corrected item-total coeficients ranged from 0.301 to 0.620 and weighted kappa coeficients ranged from 0.72 to 0.93 for the total scale items. We obtained a scale composed of 13 items divided into ive factors (smoking and alcohol belief, food belief, sexual belief, physical and sporting belief, and social belief), which explain 57.97% of the total variance. Conclusions: The scale exhibited suitable psychometric properties, in terms of internal consistency, reproducibility and construct validity. It can be used in various areas of research.