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Individuals were categorized according to BMI as underweight (&lt;\u200918.5\u2009kg\/m<jats:sup>2<\/jats:sup>), normal-weight (18.5\u201324.9\u2009kg\/m<jats:sup>2<\/jats:sup>), overweight (25.0\u201329.9\u2009kg\/m<jats:sup>2<\/jats:sup>), and obese (class I, 30.0\u201334.9\u2009kg\/m<jats:sup>2<\/jats:sup>; class II, 35.0\u201339.9\u2009kg\/m<jats:sup>2<\/jats:sup>; class III, \u2265\u00a040.0\u2009kg\/m<jats:sup>2<\/jats:sup>). Participants\u2019 nutritional status were categorized as good (MNA-SF score 12\u201314), at risk of malnutrition (MNA-SF score 8\u201311), or malnutrition (MNA-SF score 0\u20137). Associations with mortality were analysed using Cox proportional-hazards models.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>At baseline, 16.0% had obesity, and 14.6% were malnourished. During 2\u2009years of follow-up, 23,335 (48.9%) individuals died. Compared with normal-weight individuals, mortality was greater among underweight individuals [hazard ratio (HR) 1.62, 95% confidence interval (CI) 1.55\u20131.69] and lesser among individuals with class I (HR 0.63, 95% CI 0.60\u20130.66), class II (HR 0.62, 95% CI 0.56\u20130.68), and class III (HR 0.80, 95% CI 0.69\u20130.94) obesity. Compared with individuals with good nutritional status, mortality was increased for those with malnutrition (HR 2.98,95% CI 2.87\u20133.10). Lower mortality among obese individuals was also seen in subgroups defined according to MNA-SF scores.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>Among older nursing home residents, obesity, including severe obesity, was associated with lower 2-year mortality. Higher BMIs were associated with better survival, regardless of nutritional status according to MNA-SF.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12877-022-03356-1","type":"journal-article","created":{"date-parts":[[2022,8,10]],"date-time":"2022-08-10T08:03:09Z","timestamp":1660118589000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Obesity may increase survival, regardless of nutritional status: a Swedish cohort study in nursing homes"],"prefix":"10.1186","volume":"22","author":[{"given":"Maria","family":"Burman","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carl","family":"H\u00f6rnsten","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yngve","family":"Gustafson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Birgitta","family":"Olofsson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter","family":"Nordstr\u00f6m","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2022,8,10]]},"reference":[{"issue":"5","key":"3356_CR1","doi-asserted-by":"publisher","first-page":"522","DOI":"10.1177\/1403494818764810","volume":"46","author":"M Peralta","year":"2018","unstructured":"Peralta M, Ramos M, Lipert A, Martins J, Marques A. 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