Happy thus survivor? A systematic review and meta-analysis on the association between cancer survival and positive states, emotions, and traits.

OBJECTIVES: Traditionally, the literature investigating patient-reported outcomes in relation to cancer survival focused on negative factors such as distress. Meta-analyses in this field have provided a clear identification of negative affect that reduce cancer survival (e.g., depression). Nevertheless, positive psychological factors and especially positive affect might be equally crucial for cancer survival but have been neglected so far. While studies in this domain have been conducted, they remain less numerous and have produced mixed results. METHODS: A pre-registered systematic review and meta-analysis (https://osf.io/jtw7x) aimed at identifying the positive affect linked to mortality in cancers were conducted. Four databases (Pubmed, PsycINFO, Embase, and Cochrane Library) were searched to find longitudinal studies linking positive affect to survival in cancers. Two reviewers completed each stage of the study selection process, the data extraction, and the Quality in Prognosis Studies risk of bias assessments. RESULTS: Twenty-four studies involving 822,789 patients were included based on the 2462 references identified. The meta-analysis reveals that positive affect is associated with longer survival (Hazard Ratio [HR] = 0.91; 95% CI [0.86, 0.96], z = -3.58, p < 0.001) and lower mortality (Odd Ratio [OR] = 0.59; 95% CI [0.45, 0.78], z = -3.70, p < 0.001). Sub-group analyses indicated that the main predictors of survival are emotional and physical well-being, optimism, and vitality. CONCLUSION: This work emphasizes the need to consider the role of affective mechanisms in patients with cancer, including their levels of well-being or optimism to provide the most favorable conditions for survival. Therefore, stronger and continuous effort to improve patients' positive affect could be particularly beneficial for their life expectancy.

Caregivers' perception of patients' interpersonal and psychiatric alterations: What is the impact on their health?

PURPOSE: Previous research conducted among caregivers of patients with cancer revealed a poor Quality of Life (QoL) and high levels of distress. In addition to the influence of patients' clinical state, caregivers' appraisals of patients' difficulties should be considered as another predictor of poor caregiver health. This study aims to test the association between caregivers' health (i.e., QoL, depression and anxiety) and their perception of patients' difficulties. METHODS: 199 caregivers of patients with cancer completed an online survey based on questionnaires measuring their QoL, depression and anxiety, as well as their perception of patients' cognitive, emotional, functional, psychiatric and interpersonal difficulties. RESULTS: It was found that the appraisal of patients' impairments in all domains was mainly correlated with poor caregivers' QoL (Pearson correlations ranged from 0.14 to 0.45; p ≤ .05). Furthermore, linear regression analyses showed that, after controlling for age, sex education level, professional activity and living with or without the patient, the appraisal of patients' interpersonal abilities (ß = 0.25, p ≤ .05), psychiatric difficulties (ß = -0.25, p ≤ .01) and living with the patient were the main predictors of caregivers' QoL. CONCLUSION: This study highlights the importance of better understanding the role of patients' social and psychiatric difficulties when examining caregivers' health. This indicates the importance of providing support and offering information to caregivers to alert them to the role of patients' social and psychiatric difficulties on their own health. Future studies should better understand how these difficulties are associated with caregivers' perception of identity/sociability alterations in patients and how caregivers cope with these changes.

Caregivers' quality of life and psychological health in response to functional, cognitive, neuropsychiatric and social deficits of patients with brain tumour: protocol for a cross-sectional study.

INTRODUCTION: Patients with gliomas generally present cognitive, neuropsychiatric and functional deficits. Although previous research has shown that their caregivers present a poor quality of life and poor mental health, only a few studies have tested in a comprehensive way which deficits/preserved abilities of patients predominantly impact their caregivers. Furthermore, only a few studies have focused on the social impact of gliomas, which may also damage the caregivers' quality of life. Therefore, this cross-sectional study aims to investigate which patients' impairments are particularly deleterious for the caregivers and whether the histological characteristics of the gliomas also affect their quality of life. METHODS AND ANALYSIS: In order to examine these research questions, this study intends to include 180 patients (60 patients with grade II gliomas, 60 patients with grade III gliomas and 60 patients with grade IV gliomas), their caregivers and 60 healthy controls. While patients will complete a full battery of cognitive, neuropsychiatric, functional and social tests, caregivers will complete questionnaires about their quality of life, depression, anxiety and burden. Patients' performances and caregivers' reports of depression and anxiety will be compared with the scores of healthy controls. Eventually, our aim will be to provide specific care support both to reduce patients' deficits and alleviate caregivers' difficulties. ETHICS AND DISSEMINATION: The study has obtained the approval of the local faculty ethics committee ('Comité d'éthique en sciences comportementales'; 2016-5 S41 and 2015-3 S37). On completion of the study, data will be kept by Lille University for 5 years before they are destroyed. Study findings will be disseminated through peer-reviewed journal publications and conference presentations with no reference to a specific individual.