Fig. 2.

Associations between the AST/ALT ratio and 28-day all-cause mortality after ICU admission in critically ill patients with CHF. A nonlinear association between the AST/ALT ratio and 28-day all-cause mortality was found in a generalized additive model (GAM). Adjusted for gender, age, ethnicity, BMI, sepsis, COPD, AMI, cardiac arrhythmias, respiratory rate, heart rate, MAP, GCS score, Acute Physiology Score III, Apache IV score and WBC. BMI body mass index, COPD chronic obstructive pulmonary disease, AMI acute myocardial infarction, MAP mean artery pressure, GCS Glasgow Coma Scale, WBC white blood cells. The red lines represent the estimated values, and the blue lines represent their corresponding 95% confidence intervals.