An L-shaped association between prognostic nutritional index and all-cause mortality among adults with depressive symptoms: a cohort study using NHANES 2005-2018.

BMC Psychiatry · 2026 · PMC13330173 · PMID 42115969

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a significant trendno p-value reported

A significant trend across all quartiles was observed in all models ( P for trend < 0.001).

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