RT journal article T1 Association between body mass index and all-cause mortality in older people: A prospective analysis of the Chilean National Health Survey 2009-2010 A1 Concha-Cisternas, Yeny A1 Díaz-Toro, Felipe A1 Castro Piñero, José A1 Nazar, Gabriela A1 Parra Soto, Solange A1 Vásquez Gómez, Jaime A1 Celis-Morales, Carlos A1 Petermann-Rocha, Fanny A2 Didáctica de la Educación FísicaPlástica y Musical K1 Aged K1 Body Mass Index K1 Chile K1 Malnutrition K1 Mortality AB There is a divergence in the results of studies that have explored the association between body mass index (BMI) and health outcomes in different contexts. Aim: This study investigated the association between BMI and all-cause mortality in older Chilean people. Methods: 1.205 participants (≥60 years) from the Chilean National Health Survey 2009-2010 were included. The association between BMI categories and all-cause mortality was carried out using Cox proportional regression models, adjusting by confounding factors. Results: Over a median follow-up of 10.9 years (interquartile range: 8.7-11.0), 404 individuals died (33.5%). In the minimally adjusted model (model 1), the participants underweight had 1.46-times (95 CI %: 1.10;1.94) higher mortality risk, while those with obesity II exhibited a 1.73-times (95 CI %: 1.05; 2.83) higher risk of dying due to all-causes compared with the normal-weight. After adjusting for models 2 and 3, the observed association remained significant. Conclusion: Older people categorized as underweight and obese II had a higher risk of all-cause mortality than their normal-weight peers, regardless of confounding factors. PB Sociedad Medica de Santiago SN 0717-6163 YR 2024 FD 2024 LK http://hdl.handle.net/10498/35608 UL http://hdl.handle.net/10498/35608 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 10-nov-2026