IGF1 and gestational diabetes: Binary logistic regression was performed with whether pregnant women had gestational diabetes mellitus during pregnancy (assigned value: yes=1, no=0) as the dependent variable, and pre-pregnancy Midgestational Midgestational weight gain, FPG, HbA1c, TG, FINS, FFA, Lp-PLA2, IGF-1, SHBG and Cortisol as the independent variables to analyse the risk factors affecting the development of GDM.