AUTHOR=Liu Yuchen , Fu Houxin , Wang Yue , Sun Jingxuan , Zhang Rongting , Zhong Yi , Yang Tianquan , Han Yong , Xiang Yongjun , Yuan Bin , Zhou Ruxuan , Chen Min , Wang Hangzhou TITLE=U−shaped association between the glycemic variability and prognosis in hemorrhagic stroke patients: a retrospective cohort study from the MIMIC-IV database JOURNAL=Frontiers in Endocrinology VOLUME=16 YEAR=2025 URL=https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2025.1546164 DOI=10.3389/fendo.2025.1546164 ISSN=1664-2392