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Impact of household size and co-resident multimorbidity on unplanned hospitalisation and transition to care home

MacRae, Clare; Mercer, Stewart W; Abubakar, Eleojo; Lawson, Andrew; Lone, Nazir; Rawlings, Anna; Lyons, Jane; ... Guthrie, Bruce; + view all (2025) Impact of household size and co-resident multimorbidity on unplanned hospitalisation and transition to care home. Nature Communications , 16 , Article 1718. 10.1038/s41467-025-56990-9. Green open access

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Abstract

The ability to manage ill health and care needs might be affected by who a person lives with. This study examined how the risk of unplanned hospitalisation and transition to living in a care home varied according to household size and co-resident multimorbidity. Here we show results from a cohort study using Welsh nationwide linked healthcare and census data, that employed multilevel multistate models to account for the competing risk of death and clustering within households. The highest rates of unplanned hospitalisation and care home transition were in those living alone. Event rates were lower in all shared households and lowest when co-residents did not have multimorbidity. These differences were more substantial for care home transition. Therefore, living alone or with co-residents with multimorbidity poses additional risk for unplanned hospitalisation and care home transition beyond an individual’s sociodemographic and health characteristics. Understanding the mechanisms behind these associations is necessary to inform targeted intervention strategies.

Type: Article
Title: Impact of household size and co-resident multimorbidity on unplanned hospitalisation and transition to care home
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.1038/s41467-025-56990-9
Publisher version: https://doi.org/10.1038/s41467-025-56990-9
Language: English
Additional information: This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Education
UCL > Provost and Vice Provost Offices > School of Education > UCL Institute of Education
UCL > Provost and Vice Provost Offices > School of Education > UCL Institute of Education > IOE - Social Research Institute
URI: https://discovery.ucl.ac.uk/id/eprint/10205423
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