The 1H NMR serum metabolomics response to a two meal challenge: a cross-over dietary intervention study in healthy human volunteers

Table 2 OPLS models statistics

Model	Nr of LV^a	n	R²X [cum]^b	R²Y [cum]^c	Q² [cum]^d	CV-ANOVA^e (p-value)	Permutation test (Q²)^f
OPLS-DA^g	1 + 2 + 0	182	0.428	0.712	0.619	< 0.001	−0.165
OPLS-EP^h	1 + 2 + 0	24	0.656	0.966	0.922	< 0.001	–

^aLatent Variables
^b Cumulative fraction of the sum of squares of X explained by the selected latent variables
^c Cumulative fraction of the sum of squares of Y explained by the selected latent variables
^d Cumulative fraction of the sum of squares of Y predicted by the selected latent variables, estimated by cross validation
^e ANalysis Of VAriance testing of Cross-Validated predictive residuals
^f The intercept between real and random models, degree of overfit
^g Orthogonal Projections to Latent Structures with Discriminant Analysis
^h Orthogonal Projections to Latent Structures with Effect Projections
^– Not applicable

ISSN: 1475-2891