Table VI.

Pearson's correlation analysis of IL-1β and HB-EGF expression levels in endometrium in middle luteal phase with endometrial thickness and E2 and P.

Variables	Endometrial thickness (mm)	E2 (pg/ml)	P (ng/ml)
IL-1β in endometrium
r	0.83	0.35	0.42
p	0.00	0.03	0.02
HB-EGF in endometrium
r	0.72	0.29	0.36
p	0.01	0.04	0.03

IL-1β, interleukin-1β; HB-EGF, heparin-binding epidermal growth factor; E2, estradiol; P, progesterone.