Machine Learning-Based Prognostic Modeling and BAR Trajectory Subphenotyping in Critically Ill Patients with Viral Pneumonia: A Retrospective Cohort Study.
BACKGROUND Viral infection is a major cause of severe community-acquired pneumonia, yet existing risk stratification tools may lack timeliness and precision. This study aimed to develop machine learning models to predict 28-day mortality and new initiation of invasive mechanical ventilation in critically ill patients w...