This study examined how patients with cancer estimate caregiver burden (CB) and the association between their underestimation of CB and their caregivers' self‐ratings of their quality of life (CQOLC‐K; Korean version of the Caregiver Quality of Life Index‐Cancer), depression and anxiety (Korean version of the Hospital Anxiety and Depression Scale). Participants consisted of 990 patient‐caregiver dyads recruited from a nationwide cross‐sectional survey conducted in South Korea. Medical baseline data were retrieved from the hospital information systems of the participating centres.
