Fig. 5From: Association between metal cobalt exposure and the risk of congenital heart defect occurrence in offspring: a multi-hospital case-control studyAssociation between fetus placental tissue cobalt levels and the risk of CHDs in offspring. The OR adjusted for maternal age, gestational age, education, taking folic acid (yes, no), parental smoking (yes, no), maternal pre-pregnancy BMI and iron, and calcium concentration. *P < 0.05, **P < 0.01, or ***P < 0.001. Type1, septal defect; type 2, conotruncal defects; type 3, right ventricular outflow tract obstruction; type 4, left ventricular outflow tract obstruction; type 5, anomalous pulmonary venous return; type 6, other heart defects. A, aOR of total tissues Co and 6 types of CHDsBack to article page