Abstract
e20657 Background: In a previous study (Gercovich et al., 2011) we found that several dimensions of Illness Perception predicted some aspects of Quality of Life. The present study introduces Psychological Distress as a variable to assess the modulatory role it plays in the association between Illness Perception dimensions and Quality of Life in patients with breast cancer, identifying which of these two variables explain further variability in the different aspects of Quality of Life. Methods: A cohort of seventy-five patients was evaluated with the Brief Illness Perception Questionnaire, the Hospital Anxiety and Depression Scale and the European Organization for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire (QLQ-30). We calculated bivariate and partial correlations to evaluate the associations between the illness perception dimensions and different aspects of quality of life, controlling these associations by the psychological distress measure. Subsequently, we performed linear regression analysis to evaluate which of these two variables better explains the variability in the quality of life scores. Results: Although significant associations between subscales of perception of illness and quality of life were found, most of them lost their significance when controlled by distress. In the regression models, variables that predicted the variability in the quality of life best were psychopathological diagnostic and distress. Conclusions: According to the study results, psychological distress and psychopathological diagnostic were the two variables that better explained the variability in the quality of life. For this reason it is essential to learn more about the role these variables play on the quality of life and on the morbidity and mortality associated to them.
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