Quality of life and coping of women treated for breast cancer and their caregiver. What are the interactions?

This longitudinal study analyzed the interactions between the quality of life and the coping strategies of 100 patients treated for breast cancer and their caregivers. Data were collected after diagnosis, at the end of treatment, and 6 months after treatment with the Quality of Life Questionnaire-C30 (QLQ-C30), Duke Health Profile and Ways of Coping Checklist for both patients and caregivers. The theoretical model was tested using a typology of patients and mixed model analyses. The quality of life of patients changed over time and no cluster effect was found. The influence of the sociodemographic characteristics, coping strategies (patients and caregivers) and the quality of life of caregivers on patient's quality of life were different according to the quality of life dimensions considered. To understand the adaptation of patients to their disease, it is therefore essential to look at whether the caregiver is capable of playing a supporting role.