To compare the difference in cumulative live birth rates between dual ovarian stimulation and two antagonist stimulations in poor ovarian responders.

Studies have shown the ability to obtain oocytes with equivalent quality from the follicular and the luteal phase, and a higher number of oocytes within one cycle when using dual ovarian stimulation (duostim). This could be particularly relevant for women with poor ovarian responders (POR). Whether the cumulative live birth rates differ after duostim and two antagonist stimulations in POR remains controversial.

Inclusion Criteria:

• Women with POR were defined with adjusted Bologna criteria, at least two of the three following criteria: advanced maternal age (40 years); 3 oocytes in previous IVF; and antral follicle count (AFC) 5 and/or anti-Mu¨llerian hormone (AMH) 1.1 ng/ml (this criterion was mandatory)
• Aged from 20 to 44 years
• Body mass index (BMI) from 19 to 32 kg/m2
• No more than two previous IVF cycles were recruited

Exclusion Criteria:

• Amenorrhoea
• Follicle stimulating hormone (FSH) 20 IU/L or AFC 1
• Women with a partner with an extremely severe sperm anomaly or sperm donor use