Table 6.

Patient demographics and stimulation characteristics in women ≥35

	D3 group (n = 31)	D5 group (n = 31)	Statistical significance
Age (years)	38.3 ± 2.3	37.9 ± 2.2	p = 0.478
Basal FSH	8.8 ± 7.8	6.41 ± 2	p = 0.161
Antral follicle count	12.8 ± 5.4	12.3 ± 5.3	p = 0.70
Stimulation protocol:
Long agonist	20	24	p = 0.235
Short agonist	8	6
Short antagonist	3	1
Total gonadotrophin dose (IU)	1591.9 ± 581.7	1543.5 ± 490.5	p = 0.926
E2 day of HCG	2017.93 ± 897.7	1747 ± 704.9	p = 0.191
No. Follicles	9.51 ± 3.43	10.51 ± 3.56	p = 0.265
No. Oocytes	9.51 ± 4.27	10.1 ± 4.1	p = 0.449
No. Metaphase II oocytes	7.58 ± 2.8	8.12 ± 3.3	p = 0.613
No. 2PN zygotes	5.4 ± 1.7	6.1 ± 2	p = 0.247
No. Embryos transferred in IVF	1.6 ± 0.5	1.6 ± 0.5	p = 0.794
No. vitrified embryos	3.1 ± 3	3.8 ± 3.9	p = 0.603
Proportion of patients with vitrified embryos	64.5 %	54.8 %	p = 0.503