Table 1.

Demographic and clinical data.

	Group A Only 2 embryos	Group B 2 selected embryos	Group C Only 3 embryos
Number of embryo transfers	219	357	208
Age	35.1 ± 3.8	34.9 ± 3.9	35.0 ± 4.1
Previous attempts	2.4 ± 1.9	2.1 ± 1.2	2.5 ± 1.9
Proportion of ICSI/IVF cases	107/219 (48.86%)	180/357 (50.42%)	101/208 (48.56%)
Total oocytes retrieved	9.1 ± 4.5*	13.2 ± 6.5**	13.1 ± 6.2**
Mature oocytes retrieved	7.2 ± 3.9*	10.2 ± 5.0**	10.5 ± 4.2**
Fertilization rate	1198/1577 (75.97%)*	2971/3641 (81.60%)**	1819/2184 (83.29%)**
Blastocyst stage	479/1198 (39.98%)*	1901/2971 (63.99%)**	1109/1819 (60.97%)**

^(*,**)Differ significantly (p < 0.05).