Table 2. Model quality parameters of OPLS at gene level.

Model description	PCs	Number of samples	Rx2	Ry2	Q y2
T1vsT2	1+3	44	0.31	0.99	0.69
T3vsT4	1+1	20	0.31	0.92	0.45
U3vsU4	1+1	22	0.28	0.88	0.46
T2vsT3	1+2	24	0.35	0.99	0.82
T1vsT3	1+1	26	0.18	0.91	0.15
T1vsU3	1+1	24	0.19	0.90	0.05
U4vsT4	1+1	20	0.27	0.93	-0.63
T3vsU3	1+1	24	0.27	0.80	-0.29
T1vsU2	1+1	42	0.18	0.85	0.12