ArticleJournal of epidemiology and community health2025
Effect of social support on memory ageing of middle-aged and older cancer survivors: a marginal structural modelling approach.
Article in Journal of epidemiology and community health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundWhile social support is associated with better cognitive health among cancer-free individuals, this relationship is understudied among cancer survivors. We investigated whether overall social support before and after a cancer diagnosis is related to post-diagnosis memory ageing, overall and by sex/gender.
methodsData were from 2044 cancer survivors in the US Health and Retirement Study (HRS; n=1395) and English Longitudinal Study of Ageing (ELSA; n=649) from 2006 to 2018. Incident cancer diagnoses and memory function (immediate and delayed word recall) were assessed biennially. Social support was assessed every 4 years in the HRS and biennially in ELSA. We established three time points relative to a cancer diagnosis: pre-diagnosis (the wave prior to cancer diagnosis), time 1 post-diagnosis (the first wave after a cancer diagnosis) and time 2 post-diagnosis (the second wave after a cancer diagnosis). Multivariable-adjusted marginal structural models incorporating inverse probability of treatment and attrition weights estimated the relationship between overall social support and memory function post-diagnosis.
resultsPrior to a cancer diagnosis, 45.1% of participants reported high social support. Cancer survivors reporting higher social support at time 2 had better memory function post-diagnosis than those with lower social support (0.14 SD units; 95% CI: 0.03 to 0.24) which was stronger among women (0.18 SD units; 95% CI: 0.02 to 0.34) than men (0.10 SD units; 95% CI: -0.03 to 0.24).
conclusionsSocial support may help promote memory function after a cancer diagnosis in mid-to-later life. Further studies with a larger sample size and differentiation of social support are warranted.
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