Figure 4
(A) PCA score plot between component 1 versus component 2 for 1H-NMR urine spectra from sea level Baseline group and Siachen group. (B) Scree plot was generated for the first five Principal components (PCs) to identify the contribution of each of the principal components to the total variation in the data set. The green line showed the cumulative variance explained by the first five components which accounted for 54% whereas blue line indicated the individual variance for each principal component. (C) Loading plots from PCA indicating the metabolites that lied far away from the origin and were responsible for separating the two groups. (D) PCA biplot between the selected PCs. Biplot for baseline and Siachen group identifying the relationship between samples and metabolites where samples were displayed as points and metabolites were displayed as vectors.
