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. 2018 Dec 7;8:17725. doi: 10.1038/s41598-018-35854-x

Figure 2.

Figure 2

Analysis of altered salivary volatomic signatures by multivariate statistical tools. (a) Principal component analysis (PCA) of control and HNC subjects, (b) Orthogonal projections to latent structures discriminant analysis (OPLS-DA) of control and HNC subjects, (c) Permutation validation of OPLS-DA model. A total of 200 permutations were carried out to validate the model.