Changes in quality of life after a diagnosis of cancer: a 2-year study comparing breast cancer and melanoma patients.

PURPOSE: Longitudinal studies addressing change in health-related quality of life (HRQoL) following a diagnosis of cancer have mainly focused on a single cancer type, and little is known about the differences in HRQoL over time according to the type of tumor. The current study aims to compare the change in HRQoL over 2 years following breast cancer or melanoma diagnosis and socio-demographic variables associated with HRQoL over time. METHODS: Patients recently diagnosed with breast cancer (n = 215) or melanoma (n = 78) completed surveys within 1 month of diagnosis and 6, 12, and 24 months later. Multilevel modeling analyses were used to compare the evolution over time of HRQoL dimensions, as measured by the EORTC QLQ-C30, in both cancers. Longitudinal effect of socio-demographic variables on HRQoL was also assessed. RESULTS: Consistent with the literature, both cancer patients experienced decreased HRQoL scores following the diagnosis before improving over time. However, our analyses revealed that this rebound effect may occur at diverse times over the course of the illness according to the type of cancer. In addition, HRQoL over time was positively associated with age and negatively related to living with a partner regardless of the type of cancer. CONCLUSIONS: The results of the present study suggest that support in hospital units should be specific and depend on the cancer type.

A comparison of the clinical determinants of health-related quality of life and subjective well-being in long-term breast cancer survivors.

Research concerning long-term breast cancer survivors (BCS) has primarily analysed their health-related quality of life (HRQoL). However, other dimensions of life considered important by patients might be affected by cancer treatments as well. The aim of this paper is thus to compare the clinical determinants of HRQoL and of overall quality of life as described by measures of subjective well-being (SWB) in long-term BCS. SWB represents a person's own evaluation of their overall situation. A total of 321 French BCS diagnosed 5 to 15 years ago participated in a cross-sectional mailed survey. Outcome measures were the physical and mental health scores of the 36-item Short-Form survey and measures of SWB (happiness, life satisfaction and the positive and negative affect scales). Multivariate regression analyses suggest that HRQoL and SWB measures provide different pictures of the experience of breast cancer. Treatment type has no impact on HRQoL but is correlated with all our SWB measures while time since diagnosis positively affects physical health but not SWB. We conclude that it could be fruitful to analyse SWB, alongside the traditional study of HRQoL, in order to enhance our understanding of the various long-lasting consequences of breast cancer.

Long term posttraumatic growth after breast cancer: prevalence, predictors and relationships with psychological health.

This study evaluated the prevalence and predictors of long term posttraumatic growth (PTG) after breast cancer, and relationships of PTG with psychological health in a random sample of 307 currently disease-free women 5-15 years after diagnosis. This cross-sectional study reveals long term posttraumatic growth scores comparable to those found in shorter term studies. Prevalence of a better appreciation of life is especially noteworthy. With the exception of perceived current sequelae of disease associated in a somewhat curvilinear fashion with PTG, demographic and medical variables are poor predictors of the issue. On the contrary, dispositional positive affectivity and adaptative coping of positive, active, relational, religious and to some extent denial coping have a strong effect on growth. Finally, PTG is slightly associated with mental quality of life and happiness. Findings are discussed in the light of posttraumatic growth theory.