Table 1.

Comparison of group parameters

	<35 years of age (Group 1)			≥35 years of age (Group 2)
	Group 1A	Group 1B	P value	Group 2A	Group 2B	P value
Female age (years)	29.9 ± 2.9	28.9 ± 3.4	0.08	38.0 ± 2.3	37.4 ± 2.4	0.23
No. of retrieved oocytes	13.2 ± 5.3	12.5 ± 4.3	0.34	10.5 ± 3.4	11.5 ± 3.8	0.15
No. of embryos transferred	2.8 ± 0.3	2.8 ± 0.3	0.83	2.9 ± 0.5	2.8 ± 0.5	0.24
Embryo score	64.4 ± 13.6	61.3 ± 12.7	0.17	52.8 ± 14.9	49.1 ± 15.6	0.19
Clinical pregnancy (%)	57 (42/73)	56 (37/66)	0.86	43 (25/58)	38 (21/55)	0.59
Implantation (%)	30	28	0.64	19	17	0.07

Values are mean ± SD