“…16 Existing reviews are also limited to certain types of interventions, especially life review, dignity therapy, meaning-centered psychotherapy, cognitive-behavioral therapy, and the Managing Cancer and Living Meaningfully. 5,9,11,[14][15][16][17]19 Psychological outcomes, such as anxiety and depression, 5,9,11,[14][15][16]19 and quality of life 9,[15][16][17][18][19] were frequently measured in these reviews; spiritual outcomes, such as spiritual well-being, and death-related outcomes, such as attitudes toward death, were less assessed, despite being essential domains in death education. 2,20,21 Almost all existing articles are systematic reviews that evaluated the interventions' effectiveness, 5,9,[12][13][14][15][16][17][18][19] but did not determine factors that contributed to success of the intervention.…”