Fig. 3From: Volatile organic metabolites identify patients with gastric carcinoma, gastric ulcer, or gastritis and control patients a PCA score plot: gastritis patients vs gastric carcinoma patients. b OPLSDA score plot: gastritis patients vs gastric carcinoma patients (4 components, R2X = 0.381, R2Y = 0.695, Q2 = 0.542). c PLSDA validation plot intercepts: gastritis patients vs gastric carcinoma patients R2 = (0.0,0.141); Q2 = (0.0, − 0.221)Back to article page