Table 2.

Follicle growth, clinical pregnancy, and live birth rates in Group OS classified by age at initiation of follow-up.

	Age Group
	a (<35)	b (35–39)	c (≥40)
Follicle growth rate	51.6% (81/157)	49.7% (91/183)	39.3% (35/89)
Clinical pregnancy rate	26.8% (42/157)**	12.0% (22/183)	2.2% (2/89)
Live birth rate	21.0% (33/157)**	8.7% (16/183)	1.1% (1/89)
Abortion rate	21.4% (9/42)	27.3% (6/22)	50.0% (1/2)

Group OS, patients who underwent ovarian stimulation by hMG/recFSH with GnRH-a under hormone replacement; Group HR, patients who were observed with estrogen and progestin replacement only.

a, patients <35 years; b, patients 35–39 years; c, patients ≥40 years of age at initiation of follow-up at Rose Ladies Clinic.

**p < 0.01.