ArticleBMC geriatrics2025
Impact mechanisms of grandparental care on social isolation among older migrants: evidence from a megacity in China.
Article in BMC geriatrics, 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
objectiveAmid population aging and migration, social isolation among older migrants in megacities has increasingly become a public health challenge. This study explores how grandparental childcare affects social isolation via social participation, and the moderating role of settlement intention in this path, offering a new perspective on older migrants' social integration.
methodsUsing survey data of older migrants in Shenzhen, a Chinese megacity, this study applies PROCESS macro Model 4 to test the mediating role of social participation in the association between grandparental childcare and social isolation, and moderated mediation Model 14 to analyze the moderating role of settlement intention in the 'social participation → social isolation' association.
resultsGrandparental childcare frequency is significantly associated with higher LSNS-6 scores (indicating lower social isolation) (β = 2.841, t = 3.018, P < 0.01). Social participation partially mediates the association between grandparental childcare and social isolation, accounting for 34.53% of the total effect. Settlement intention significantly moderates the association in the second half of the mediating pathway (β=-1.016, t=-2.675, P < 0.01). Specifically, the strength of the association between social participation and LSNS-6 scores (indicating lower social isolation) was stronger among older migrants without settlement intention (B = 2.222, t = 7.072, P < 0.01) than among those with settlement intention (B = 1.206, t = 5.376, P < 0.01).
conclusionsThis study shows grandparental childcare alleviates older migrants' social isolation (as reflected by higher LSNS-6 scores) by enhancing social participation, with settlement intention moderating the link between social participation and social isolation. Notably, temporary residence mentality may strengthen social participation's positive effect, offering new evidence for explaining migrants' "cultural barriers." Future research should examine mediating variables like language ability and cultural identity to inform differentiated social integration policies.
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