2.

两组患者基础资料及冻卵情况比较

Comparison of baseline characteristics and oocyte vitrification between the two groups

Index	< 35 years group	≥35 years group	P
No. of cycles	17	10
Age (year)	28.59±2.92	38.00±1.83	< 0.001
Years of infertility	3.06±1.71	3.50±2.07	0.555
Body mass index (kg/m2)	21.17±3.07	22.14±3.60	0.464
Proportion of primary infertility (%)	70.59 (12/17)	30.00 (3/10)	0.057
Basal serum FSH (U/L)	6.30±1.29	9.95±6.68	0.036
Basal serum LH (U/L)	4.61±2.25	6.09±6.21	0.377
Basal serum E2 (ng/L)	35.08±8.93	57.36±43.10	0.048
Basal serum P (μg/L)	0.51±0.16	0.60±0.12	0.167
Antral follicle count	13.92±5.58	9.00±5.75	0.079
No. of oocytes retrieved	15.29±6.87	4.90±3.64	< 0.001
No. of oocytes vitrification	13.29±6.49	4.80±3.65	0.001
No. of MII oocytes vitrification	10.53±5.50	3.50±2.88	0.001