Urinary metabolic profiles during Helicobacter pylori eradication in chronic gastritis

Figure 2 Principal component analysis and partial least square discriminant analysis score scatter plots from urine analysis data. A, B: Principal component analysis (PCA) model score scatter plots; C, D: Partial least square discriminant analysis (PLS–DA) model score scatter plots; and (E and F) PLS-DA validation plot; A, C, E: Negative electronspray ionization (ESI) mode; B, D, F: Positive ESI mode. HP(+): Helicobacter pylori-positive; HP(−): Helicobacter pylori-negative.