Table 4.

Reproductive parameters from 915 cycles of oocyte donation program categorized by age in recipient younger and older than 38 years

Parameter	Recipient age < 39 years	Recipient age ≥ 39 years	p-value
N	456	459
Recipients’ age (yr)	34.04 ± 0.15	42.37 ± 0.12	<0.01
Donors’ age (yr)	25.28 ± 0.22	24.78 ± 0.20	0.09
Recipients’ BMI	24.14 ± 0.33	24.29 ± 0.28	0.73
Men’s age (yr)	35.81 ± 0.20	42.31 ± 0.28	<0.01
Fertilization rate (%)	83.17 ± 0.84	82.26 ± 0.82	0.44
Mean number of blastomers	5.54 ± 0.09	5.72 ± 0.09	0.17
Mean rate of fragmentation (%)	10.21 ± 0.40	10.70 ± 0.43	0.41
No. of replaced embryos	2.66 ± 0.04	2.67 ± 0.04	0.86
Pregnancy rate (%)	55.75	44.92	<0.01
Embryo implantation rate (%)	32.79 ± 1.64	25.66 ± 1.53	<0.01
No. of embryonic sacs	1.49 ± 0.04	1.47 ± 0.05	0.75
Miscarriage rate (%)	21.03	19.71	0.73