AUTHOR=Wang Yi-chao , He Qian , Wu Yue-jing , Zhang Li , Wu Sha , Fang Xiao-jia , Jia Shao-shen , Luo Fu-gang TITLE=Construction and validation of a machine learning-based nomogram model for predicting pneumonia risk in patients with catatonia: a retrospective observational study JOURNAL=Frontiers in Psychiatry VOLUME=16 YEAR=2025 URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2025.1557659 DOI=10.3389/fpsyt.2025.1557659 ISSN=1664-0640