AUTHOR=Li Changqing , Zhao Xiaojiang , Zhang Lei , Ma Chao , Zhang Wenbo , Ding Hong TITLE=Anemia as a mediator: bridging the frailty index and hip fractures in older Chinese populations JOURNAL=Frontiers in Public Health VOLUME=Volume 13 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2025.1558074 DOI=10.3389/fpubh.2025.1558074 ISSN=2296-2565