CD40LG and abortion: The prediction model calculation formula was as follows: subsequent EPL prediction model score = -10.0695 + 0.03738*age + 0.12240*BMI + 0.90452*induced abortion + 1.05194*ACA + 0.62670*IgM + 0.86737*LHR + 0.15993*HCY + 0.02297*PNR + 0.51565*PLs.