Inclusion criteria
cancer, critically ill
CANCER, CRITICALLY ILL
We included caregivers with the following criteria: 1) caregivers who were the first-degree relatives of cancer patients and had the most responsibility for caregiving of them during the last 3 months, 2) those who were caregiving of cancer patients who were dying or critically ill according to the opinion of the treating physician, and 3) caregivers aged ≥ 18 years.