. 2020 Nov 24;10:20418. doi: 10.1038/s41598-020-76876-8

Table 2.

Statistical parameters for OPLS-DA model.

OPLS-DA model using the whole ¹H-NMR metabolomics profile
	Components^a	R2Xcum^b	R2Ycum^c	Q2cum^d	R2 intercept	Q2 intercept
IEI-EMF versus controls	1P + 2O	0.639	0.699	0.557	0.239	− 0.439

^aThe number of Predictive and Orthogonal components used to create the statistical models.

^b,c R2X and R2Y indicated the cumulative explained fraction of the variation of the X block and Y block for the extracted components.

^d Q₂cum values indicated cumulative predicted fraction of the variation of the Y block for the extracted components.

*R2 and Q2 intercept values are indicative of a valid model.