Serum Metabolomics of Early Postoperative Cognitive Dysfunction in Elderly Patients Using Liquid Chromatography and Q-TOF Mass Spectrometry

Figure 3

Partial least squares-discriminant analysis (PLS-DA) score plot and permutation test for the model discriminating serum samples from POCD patients and healthy controls. (a) POS-PLS-DA score plot. (b) NEG-PLS-DA score plot. (c) POS-permutation test for the model of PLS-DA. (d) NEG-permutation test for the model of PLS-DA: (■) POCD group and (●) non-POCD group.

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