Table 1.

Demographics

	Natural cycle	Semi-HRT cycle	HRT cycle
No. of cycles	2216	1180	2018
Mean age (year)	31.3±3.8a	30.8±3.8	30.8±4.0
BMI (kg/m2)	22.6±3.3b	22.3±3.7	22.4±3.5
Duration of infertility (year)	4.9±3.3	4.8±2.8	4.8±3.1
Primary infertility (%)	49.2 (1090/2216)	48.9 (577/1180)	50.1 (1011/2018)
Basal FSH (mIU/mL)	5.7±2.2	5.6±2.2	5.8±2.0

^a P<0.01;

^b P=0.04.