Table 5.
The different prognosis factors of cumulate live birth rate for patients in different groups.
| Variable | All | Female age <35 years group | Female age ≥35 years group |
| Female age | + | − | + |
| Male age | − | − | + |
| BMI of female | + | + | − |
| Average duration of infertility | + | − | − |
| Type of infertility | − | + | − |
| Classification of infertility | + | + | − |
| Preliminary gonadotropin used | − | − | − |
| Duration of stimulation | + | − | − |
| Number of gonadotropin units used | + | + | + |
| COH protocol | + | + | + |
| Number of oocytes retrieved | + | + | + |
| Number of transferrable embryos | + | + | + |
+: P < 0.05; −: P > 0.05. BMI: Body mass index; COH: Controlled ovarian hyperstimulation.