Table II. IVF outcomes among the groups.
Group A Group B Group C
Cycles 80 248 283
Age (y) 34.6 ± 3.3 34.7 ± 3.3 34.0 ± 8.8
BMI (kg/m2) 22.3 ± 0.5 21.7 ± 0.9 22.1 ± 0.8
No. of oocytes retrieved 4.40 ± 2.99 4.48 ± 2.81 5.34 ± 2.99
(P =.0037 vs. group C) (P=.0001 vs. group C)
Fertilization rate (%) 77.5 ± 28.1 78.8 ± 27.9 82.0 ± 21.9
Good quality ratea (%) 67.2 ± 32.5 63.0 ±36.8 58.1 ± 35.1
Transferred embryos 2.20 ± 0.86 2.35 ± 0.83 2.67± 0.89
(P = .0001 vs. group C) (P = .0001 vs. group C)
Implantation rate (%) 14.1 11.7 11.3
Pregnancy rate per ET (%) 25.3 22.3 23.9
Live birth rate per ET (%) 14.7 15.0 15.4

Note: Values are mean _ SD. IVF _ in vitro fertilization; BMI _ body mass index; ET _ embryo transfer.
a Embryos were graded from 1 to 5 according to the classification of Veeks and defined as “good quality” when the embryo was 1 or 2 grade; 80 cycles had ovarian endometriomas that were aspirated and identified as “chocolate” cyst(s) at the time of oocyte retrieval (group A); 248 cycles did not have cysts at the time of oocyte retrieval, while endometriosis was diagnosed by laparoscopy or laparotomy before IVF (group B); 283 cycles had tubal factor without endometriosis, as diagnosed by previous laparoscopy (group C).
Suzuki. IVF outcomes with endometriomas. Fertil Steril 2005.