Table 2. Summary Statistics of the Models Used to Describe Changes in Serum, Plasma, and Urine of UC and CD Patients and Healthy Persons^a.

data set	model	Apred	Aorth	R2X	R2Y	Q2YCV
serum	UC:control	1	1	0.29	0.798	0.53
	CD:control	1	4	0.508	0.963	0.84
	CD:UC	1	0	0.142	0.39	0.0249
plasma	UC:control	1	1	0.312	0.772	0.613
	CD:control	1	1	0.381	0.789	0.67
	CD:UC	1	0	0.157	0.386	0.115
urine	UC:control	1	5	0.466	0.997	0.688
	CD:control	1	0	0.143	0.785	0.528
	CD:UC	0	0	0	0	0
hierarchical	UC:control	1	0	0.221	0.749	0.685
	CD:control	1	1	0.366	0.728	0.635
	CD:UC	1	0	0.227	0.376	0.23

^aA_pred, number of Y-predictive components; A_orth, number of Y-orthogonal components; R²X, explained variance of X; R²Y, explained variance of Y; Q²Y_CV, predicted variance of Y estimated using cross-validation. R²X and R²Y show how well the model explains the variation in X and Y, respectively. Q²Y represents the quality and predictive power of the model.