Machine learning to identify potential biomarkers for sarcopenia in liver cirrhosis

Figure 4 Heatmap of the Spearman correlation coefficient matrix between selected metabolites and clinical variables. Red and blue indicate negative and positive correlations, respectively. Empty cells indicate non-significant correlations (P values > 0.05). ^aP < 0.05, ^bP < 0.01, ^cP < 0.001. BMI: Body mass index; Cr: Creatinine; SF: Serum ferritin.