Table 1.

Parameters associated with each model as referred to in Fig. 4

Model number	Type	Components	R2X (cum)	R2Y (cum)	Q2 (cum)
a	PCA-X	3	0.441		0.155
b	PCA-X	4	0.664		0.434
c	PCA-X	3	0.646		0.474
d	OPLS-DA	1 + 1 + 0	0.38	0.995	0.944
e	OPLS-DA	1 + 1 + 0	0.53	0.97	0.937
f	OPLS-DA	1 + 1 + 0	0.643	0.968	0.871
g	OPLS-DA	1 + 1 + 0	0.201	0.974	0.451
h	OPLS-DA	1 + 1 + 0	0.441	0.916	0.595
i	OPLS-DA	1 + 1 + 0	0.53	0.906	0.627