Figure 1

Dose–response association between BMI and BLL in women adjusted for age, rural/urban residence, economic status, current smoking, diabetes, dyslipidemia and hypertension.
A solid line shows dose–response curve between BLL and BMI. Y-axis represents the difference in BMI between individuals with any value of BLL with individuals with 25.13 μg/L of BLL. The dashed lines represent the 95% confidence of interval. Knots are represented by dots.