Table 3.

Results of principal components analysis

	Component loadings
	1	2	3	4
Post exam serum	-0.14	0.68	0.71	0.04
Post dexamethasone serum	-0.08	0.71	-0.70	0.04
Saliva morning	0.69	0.15	0.03	-0.70
Saliva evening	0.70	0.07	0.03	0.71
Eigenvalue	1.89	1.18	0.81	0.13
Variance explained (%)	47	29	20	3