Preferred and actual involvement of caregivers in oncologic treatment decision-making: A systematic review

Introduction Treatment decision-making in cancer is complex and many patients bring their caregiver to appointments to help them make those decisions. Multiple studies show the importance of involving caregivers in the treatment decision-making process. We aimed to explore the preferred and actual involvement of caregivers in the decision-making process of patients with cancer and to see if there are age or cultural background related differences in caregiver involvement. Materials and Methods A systematic review of Pubmed and Embase was performed on January 2, 2022. Studies containing numerical data regarding caregiver involvement were included, as were studies describing the agreement between patients and caregivers regarding treatment decisions. Studies assessing solely patients aged younger than 18 years old or terminally ill patients, and studies without extractable data were excluded. Risk of bias was assessed by two independent reviewers using an adapted version of the Newcastle-Ottawa scale. Results were analysed in two separate age groups, one