Fig. 4

Mediating effects of obesity. *P < 0.05. **P < 0.01. ***P < 0.001. (A) represented no disease group, (B) represented hypertension group, (C) represented hyperlipidemia group, (D) represented comorbidities group. PIR, the ratio of family income to poverty. BMI, body mass index; PFOA, perfluorooctanoic acid.