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Although Portugal relies heavily on co-residential care by individuals aged 50 and over, studies on the impact of co-residential care provision on Portuguese caregivers\u2019 healthcare use are lacking. This study aims to analyze the impact of co-residential care (spousal and non-spousal care) on healthcare use of the Portuguese population aged 50 plus. Data from waves 4 (n = 1697) and 6 (n = 1460) of the Survey of Health, Ageing and Retirement in Europe (SHARE) were used. Negative Binomial Generalized Linear Mixed Models with random (individual level) and fixed (covariates) effects were performed. The results show that the number of visits to the doctor decrease significantly over time for the co-residential spousal caregivers as compared to the non-co-residential caregivers. This result highlights the fact that the Portuguese co-residential spousal caregiver group is at a higher risk of not using healthcare, thus jeopardizing their own health and continuity of care. Promoting more accessible healthcare services and implementing public policies adjusted to the needs of informal caregivers are important to improve the health and healthcare use of Portuguese spousal co-residential caregivers.<\/jats:p>","DOI":"10.3390\/ijerph20053975","type":"journal-article","created":{"date-parts":[[2023,2,23]],"date-time":"2023-02-23T04:32:33Z","timestamp":1677126753000},"page":"3975","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["The Longitudinal Association between Co-Residential Care Provision and Healthcare Use among the Portuguese Population Aged 50 and Over: A SHARE Study"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7503-8730","authenticated-orcid":false,"given":"F\u00e1tima","family":"Barbosa","sequence":"first","affiliation":[{"name":"Communication and Society Research Centre, Institute of Social Sciences, University of Minho, 4710-057 Braga, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6782-7481","authenticated-orcid":false,"given":"Sara","family":"Sim\u00f5es Dias","sequence":"additional","affiliation":[{"name":"Center for Innovative Care and Health Technology (CiTechCare), School of Health Sciences, Polytechnic of Leiria, 2410-541 Leiria, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6798-4070","authenticated-orcid":false,"given":"Gina","family":"Voss","sequence":"additional","affiliation":[{"name":"Communication and Society Research Centre, Institute of Social Sciences, University of Minho, 4710-057 Braga, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2394-4077","authenticated-orcid":false,"given":"Alice","family":"Delerue Matos","sequence":"additional","affiliation":[{"name":"Communication and Society Research Centre, Institute of Social Sciences, University of Minho, 4710-057 Braga, Portugal"},{"name":"Department of Sociology, Institute of Social Sciences, University of Minho, 4710-057 Braga, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,2,23]]},"reference":[{"doi-asserted-by":"crossref","unstructured":"Colombo, F., Llena-Nozal, A., Mercier, J., and Tjadens, F. 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