Association of the PaO2/RDW ratio with 7-day mortality and risk of early invasive mechanical ventilation in ICU patients with delirium associated with ARDS: A retrospective cohort study from the MIMIC-IV database. - Xu, Jiao; Jin, Jun; Zou, Shan; Zheng, Si-Hao; Zhou, Qing-Shan; Deng, Jiang-Tao (PLoS ONE, 2025)