Table 1.

Pregnancy outcomes of patients in fresh ET cycles

Variable	Extended culture	Control	P
No. of ET cycles	157	235
No. of embryos transferred	305	470
Mean no. of embryos transferred	1.94 ± 0.30	2.00 ± 0.36	0.100
No. of high-quality embryos (% of number of embryos transferred)	262 (85.90)	416 (88.51)	0.284
No. of embryos transferred with good developmental potential (%)	207 (67.87)
Endometrial thickness (mm)	11.26 ± 1.98	11.05 ± 2.05	0.314
No. of clinical pregnancies (% ET cycles)	84(53.50)	107(45.53)	0.122
No. of implantations (%)	110 (36.07)	136 (28.94)	0.037
No. of multiple pregnancies (% of clinical pregnancies)	25 (29.76)	29 (27.10)	0.685
No. of triplet pregnancies (% of clinical pregnancy)	1 (1.19)
No. of ectopic pregnancies (% of clinical pregnancy)	4 (4.76)	3 (2.80)	0.202
No. of abortions (% of clinical pregnancy)	8 (9.52)	18 (16.82)	0.144
No. of deliveries	73	87
No. of live birth cycles (% ET cycles)	71 (45.22)	86 (36.60)	0.088