Relationship between Atherogenic Index of Plasma and Length of Stay in Critically Ill Patients with Atherosclerotic Cardiovascular Disease: A Retrospective Cohort Study and Predictive Modeling Based on Machine Learning

Background: The atherogenic index of plasma (AIP) is considered an important marker of atherosclerosis and cardiovascular risk. However, its potential role in predicting length of stay (LOS), especially in patients with atherosclerotic cardiovascular disease (ASCVD), remains to be explored. We investigated the effect of AIP on hospital LOS in critically ill ASCVD patients and explored the risk factors affecting LOS in conjunction with machine learning.