Table 3.

Spearman Correlative Statistics Between Serum Melatonin Levels and Psychometric Tests

Melatonin Level	BDI	ESS	MEQ	ISI
Preoperative Melatonin
r	0.27	157	163	0.2
p	0.06*	0.31	0.003**	0.16
Daytime Postoperative Melatonin
r	6.53	0.9	185	536
p	0.7	0.001**	0.06*	0.0001**
Nighttime Postoperative Melatonin
r	25	0.6	116	500
p	0.38	0.07*	0.4	0.001**

Notes: *Trend toward significance. **Significant correlation.