Association between Geriatric Nutritional Risk Index (GNRI) and all-cause mortality in centenarians, with a focus on nonlinear and threshold effects: a multi-method observational study.

Front Nutr · 2026 · PMC12962923 · PMID 41798851

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highly significantno p-value reported

Participants in the highest quartile (Q4) exhibited a 52% lower risk of death compared to the lowest quartile [HR 0.52 (95% CI 0.41–0.66)], with a highly significant linear trend across the groups ( p for trend <0.001).

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