Abstract
The impact that cancer disease can have on individuals varies depending, among other things, on their personal characteristics, so it is important to explore aspects such as the personality traits in relation to mental health in people with cancer. The aim of this study was to analyse the relationship between neuroticism, extraversion and mental health in people with cancer. Besides, this study also explored differences in mental health when combining extraversion and neuroticism levels. One hundred and seventy people who had been diagnosed with different types of cancer (breast cancer, lung, colon, gynaecological cancer and others) composed the sample. Almost all of them (92.9%) had received oncological treatment. The GHQ-12 scale was used to assess the mental health and the 60-item NEO Five-Factor Inventory was applied in order to measure neuroticism and extraversion in participants. A hierarchic lineal regression model was conducted. Neuroticism and extraversion did not show any interaction effect, although a partial mediation was observed in relation to mental health outcomes. Given the significant correlation between neuroticism and extraversion with mental health (r = .59, p < .001; r = -.41, p < .001), both personality traits were combined, resulting in a classification of four different personality profiles (F ((4;165)) = 19.85; p < .001). Results in this study have shown that low levels of neuroticism and high levels of extraversion are related to positive health outcomes. They seem to be protective factors with respect to the mental health in people with cancer. The knowledge of the positive effects of these aspects contributes to the comprehension of mental health in the oncological sample, which should be considered in order to design and guide particular therapeutic interventions adapted to each person.