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Original Research
Published 9 October 2026
Development and external validation of an explainable machine learning model for identifying depressive symptoms in middle-aged and older adults with low haemoglobin: a prediction-model study
Qilong Wang · Juan He · Siheng Ma · Jianpeng Zhao · Jingjing Zong · Dongmei Ma · Sha Liu · Lei Zhang · Xin Qi · Dongrong Zhao
Frontiers in Nutrition
doi 10.3389/fnut.2026.1846276