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Figure 5 Pattern Recognition Analysis

¹H-NMR metabolite profiles underwent principal component analysis as described in "Materials and Methods." (A) Plots of the 4 principal components (PC 1, 3, 5, and 6) were used for discrimination. Red triangles and blue circles represent patients who developed post-operative AF and patients, who maintained SR, respectively. Note that more than 80% of patients were correctly classified using either PC1 versus PC5 (B) or PC3 versus PC6 (C). Abbreviations as in Figure 2.