Table 1.

Eigenvalues, the percentage of total variance explained in the multivariate analysis of variance, and the correlation coefficients (r) between the original variables and the principal components.

	Principal Components (PCs)
	PC1	PC2
Eigenvalues (λ)	10.80	2.97
Percentage of total variance (S2%)	67.52	18.58
Hotelling test (T2) for interaction (ECw × M)	0.01	0.01
Hotelling test (T2) for interaction (ECw × C)	0.01	0.01
Hotelling test (T2) for interaction (M × C)	0.01	0.01
Hotelling test (T2) for interaction (ECw × M × C)	0.03	0.05