AUTHOR=Yang Qianwen , Zhang Maoyang , Dong Zilong , Deng Fang TITLE=A predictive model to explore risk factors for Henoch–Schönlein purpura nephritis in children: a retrospective cross-sectional study JOURNAL=Frontiers in Public Health VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2025.1507408 DOI=10.3389/fpubh.2025.1507408 ISSN=2296-2565