BMI, body mass index; PCOS, polycystic ovary syndrome; LM: late miscarriage

P1: unLM vs. Control, P2: feLM vs. Control, P3: ceLM vs. Control, P4: trLM vs. Control.

unLM: group of late miscarriage for unexplained factor;

feLM: group of late miscarriage for fetal factor;

ceLM: group of late miscarriage for cervical factor;

trLM: group of late miscarriage for trauma factor.

a: Data were missing regarding the sperm density at HCG trigger day in 791 women in the general IVF Group, in 80 women in the unLM group, in 34 women in the feLM group, in 64 women in the ceLM group, and in 10 women in the trLM group.

b: Data were missing regarding the sperm motility at HCG trigger day in 827 women in the general IVF Group, in 82 women in the unLM group, in 36 women in the feLM group, in 64 women in the ceLM group, and in 9 women in the trLM group.