Table 2.

Clinical and neonatal outcomes in the two groups

	Group A (n = 446)	Group B (n = 1200)	P
Implantation rate	49.2% (439/892)	54.8% (1314/2400)	0.01
Clinical pregnancy rate	71.3% (318/446)	74.7% (896/1200)	0.17
Ectopic pregnancy rate	1.3% (4/318)	2.7% (24/896)	0.15
Abortion rate	8.8% (28/318)	9.7% (87/896)	0.64
Live birth rate	64.1% (286/446)	65.4% (785/1200)	0.63
Number of foetuses			0.02
Singleton	190 (66.4%)	461 (58.7%)
Twin	96 (33.6%)	324 (41.3%)
Birthweight
Singleton	3346 ± 545	3318 ± 563	0.67
Twin	2596 ± 402	2567 ± 436	0.40
Low birth weight
Singleton	4.2% (8/190)	4.8% (22/461)	0.76
Twin	35.4% (68/192)	39.0% (253/648)	0.36
Gestational age
Singleton	38.8 ± 1.5	38.7 ± 1.8	0.42
Twin	36.5 ± 1.9	36.4 ± 1.9	0.86
Preterm birth
Singleton	7.9% (15/190)	5.9% (27/461)	0.34
Twin	39.6% (38/96)	36.4% (118/324)	0.57