Figure 1.

Association of blood urea nitrogen with the development of gestational diabetes mellitus. ORs and 95% confidence intervals derived from restricted cubic spline regression, with knots placed at the 5th, 35th, 65th and 95th percentiles of the distribution of serum blood urea nitrogen. Reference point of serum BUN is the mid‐point (2.10 mmol/L) of the reference group from categorical analysis. ORs were adjusted for maternal age, education, gravidity, parity, baseline BMI, gestational weight gain, systolic BP, FPG, WBC, haemoglobin and eGFR