Establishment and evaluation of a risk prediction model for gestational diabetes mellitus

Table 2 Variable assignment

Variables	Assignment
Whether GDM occurred (dependent variable)	Yes = 1, no = 0
GDM	Yes = 1, no = 0
Hypertension	Yes = 1, no = 0
Giant infant	Yes = 1, no = 0
Family history of DM	Yes = 1, no = 0
Hb	Original value input
Pre-pregnancy BMI	Original value input
Triglyceride	Original value input
Serum ferritin	Original value input
First-trimester fasting hyperglycemia	Original value input

BMI: Body mass index; DM: Diabetes mellitus; GDM: Gestational diabetes mellitus; Hb: Hemoglobin.