Fig. 1. Partial least-squared discriminant analysis (PLS-DA) for the metabolomic data of the heart failure and non-heart failure groups. (A) Score plot shows the discrepancy between the heart failure and non-heart failure groups. (B) The model is accessed via 200-time permutation test. A 200-time permutation test was used to assess the model. The y-axis intercepts are R2 (0, 0.0954) and Q2 (0, −0.116).
