“…Care recipients and caregivers influence each other. Indeed, caregivers' depressive symptoms (Drabe et al, 2015;Hodges, Humphris, & Macfarlane, 2005) and QOL (Chen, Chu, & Chen, 2004;Drabe et al, 2015) are associated with those of their care recipients with cancer, and in turn, terminally ill cancer patients' depressive symptoms and QOL were significantly associated with their SPB (Tang et al, 2014(Tang et al, , 2016. However, few studies have comprehensively investigated caregiver-related factors associated with patients' SPB (Gauthier et al, 2007;Kowal et al, 2012;McPherson, Wilson, Lobchuk, et al, 2007), with only weakto-moderate correlations reported between caregiving burden and high SPB.…”