Table 5.

Relationship Between Salivary Melatonin Concentration at Different Sampling Times and Both SER and AL

	SER			AL
Sampling Time	ρ	R 2	P	ρ	R 2	P
08:00:00	−.41	.14	0.004*	.39	.16	0.007*
09:10:00	−.43	.17	0.004*	.49	.21	0.001*
19:00:00	−.51	.20	0.001*	.57	.25	<0.001*
20:00:00	−.49	.19	0.002*	.50	.22	0.001*
21:00:00	−.47	.18	0.002*	.51	.23	0.001*
22:00:00	−.52	.18	0.001*	.54	.22	<0.001*
23:00:00	−.48	.20	0.002*	.47	.22	0.001*
00:00:00	−.54	.21	0.001*	.53	.23	0.001*

ρ = Spearman's correlation coefficient.

Holm-Bonferroni correction was applied to control for multiple statistical tests.

^*Indicates significance at P ≤ 0.05.