ArticleBMC geriatrics2026
Living space, utilities, and communication access as determinants of intrinsic capacity: longitudinal findings from England and China.
Article in BMC geriatrics, 2026. 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
backgroundHousing is a critical component of age-friendly environments and may influence intrinsic capacity (IC), a multidimensional indicator of healthy ageing defined by the World Health Organization. However, longitudinal evidence on how housing characteristics relate to IC across diverse contexts remains limited.
methodsData were collected from the China Health and Retirement Longitudinal Study (CHARLS) (N = 5,691) and the English Longitudinal Study of Ageing (ELSA) (N = 5,218). IC was measured across five domains including cognition, locomotor, vitality, sensory, and psychological well-being. Housing characteristics covered living space, basic utilities and infrastructure, communication access, housing problems, and accessibility/adaptation features. The relationship between housing characteristics and IC was assessed using multivariable linear mixed-effects growth-curve models adjusted for socio-demographic and health-related covariates. Sensitivity analyses additionally modelled post-baseline IC while adjusting for baseline IC and baseline covariates.
resultsIn the primary models, most housing characteristics were associated with baseline differences in IC, whereas evidence for differential IC trajectories over follow-up was limited. In CHARLS, greater living space, utility access, and communication access were associated with higher baseline IC. In ELSA, fewer housing indicators were associated with baseline IC, and computer ownership was the only housing characteristic associated with a more favourable IC trajectory in the primary models; this association attenuated after adjustment for baseline IC. In the baseline-IC adjusted sensitivity analyses, home adaptation in ELSA was associated with a less favourable IC trajectory.
conclusionsHousing characteristics were associated primarily with IC level differences, with limited evidence of differential IC decline over follow-up. Adequate living space and communication access were consistently related to better IC levels, while utility-related associations were more evident in CHARLS than in ELSA. These findings support the relevance of housing within healthy-ageing policy, while also indicating that the meaning and implications of specific housing characteristics differ across settings and should be interpreted cautiously.
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