Figure 2.

Random forest analysis and AUC curves. Random forest analysis in (A) male, (B) female, (C) overall participants and their corresponding (D) AUC curves. The green (HF group) and red (non-HF group) nodes which were significantly different between these two groups denoted the important score in the construction of the random forest model. The AUC curves for the random forest models in separating HF and non-HF groups using the dietary information and laboratory examinations. The red font indicated the dietary indices. AUC, area under the curve.