Original ResearchPublished 11 August 2026Development and validation of a routine urinalysis-based risk stratification model for IgA nephropathy in a multicenter real-world hospital populationChi Wang · Wan He · QingYuan Zheng · Yuan Zhong · Meng Tang · ChunYing Zhang · Yong HeFrontiers in Nephrologydoi 10.3389/fneph.2026.1826486