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Fig. 2 | Critical Care

Fig. 2

From: Plasma metabolomics for the diagnosis and prognosis of H1N1 influenza pneumonia

Fig. 2

The orthogonal partial least-squares discriminant analysis (OPLS-DA) of patients with H1N1 vs. ventilated ICU control subjects shows the best possible discrimination. a OPLS-DA plot for proton nuclear magnetic resonance data (R 2 = 0.889, Q 2 = 0.789, and P < 0.0001). b OPLS-DA plot for gas chromatography-mass spectrometry data (R 2 = 0.963, Q 2 = 0.946, P < 0.0001). The x-axis represents the prediction component that shows differences between groups, and the y-axis represents the orthogonal component differences within the group. R 2 represents goodness of fit, Q 2 represents goodness of prediction, and P value shows the significance level of the model (x-axis = predictive components, y-axis = orthogonal component)

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