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. 2022 Dec 8;14(12):2751. doi: 10.3390/pharmaceutics14122751

Figure 1.

Figure 1

Multivariate statistical analysis of the metabolomics analyses. 3D PCA plots of the plasma metabolomics data of the included plasma samples under positive (A) and negative ion mode (B). OPLS-DA with score plot of DR group and control group under positive (C) and negative ion mode (D). OPLS-DA with a score plot of PDR subgroup and NPDR subgroup under the positive (E) and negative ion mode (F). PCA, principal component analysis; DR, diabetic retinopathy; OPLS-DA, orthogonal partial least squares discriminant analysis; PDR, proliferative diabetic retinopathy; NPDR, non-proliferative diabetic retinopathy.