Psychosocial Health and Chronic Health Conditions Among Bereaved Siblings: A Report From the Childhood Cancer Survivor Study (CCSS)

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OBJECTIVE: To compare psychosocial health and chronic health conditions (CHCs) in bereaved and non-bereaved adult siblings impacted by childhood cancer and to identify predictors of emotional distress and health-related quality of life among bereaved siblings. METHODS: A total of 4558 adult siblings (733 bereaved; 3825 non-bereaved) of 5-year survivors of childhood cancer completed measures of emotional distress (Brief Symptom Inventory [BSI]-18) and health-related quality of life (Medical Outcomes Survey Short Form [SF]-36) and reported their social attainment milestones (i.e., educational attainment, employment, and marital status). CHCs' burden was classified as none/low versus medium/high/very severe. Cancer-associated complications prior to the patient's death, sibling age at bereavement, and social attainment variables were examined as predictors of emotional distress and health-related quality of life among bereaved siblings using multivariable modified Poisson regression. RESULTS: Bereaved siblings in this sample reported excellent psychosocial health long term (e.g., depressive symptoms 6.5%, somatization 4.4%, anxiety 3.5%). Bereaved siblings had an elevated risk of depression (relative risk [RR] 1.53; 1.10-2.13, p = 0.01), reduced social quality of life (RR 1.35; 1.00-1.82, p = 0.05), diminished educational attainment, and greater CHC burden than non-bereaved siblings. No differences were observed for other subscales or social attainment outcomes. Among bereaved siblings, risk factors for depression included male sex (RR 0.42; 0.19-0.93, p = 0.05), never being married (RR 3.02; 1.45-6.28, p = 0.05), and greater CHC burden (RR 2.42; 1.18-4.99, p = 0.05). Risk factors for poor social functioning included unemployment (RR 2.24; 1.12-4.45, p = 0.05) and never being married (RR 2.16; 1.22-3.82, p = 0.05). CONCLUSION: Bereaved siblings report excellent psychosocial health long-term and demonstrate only a marginally elevated risk of experiencing symptoms of depression and poor social quality of life compared to non-bereaved siblings.

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