TPO and Abdominal obesity: It indicated that SCH was significantly associated with CKD even after adjustments for gender, age, household income, education, smoking, alcohol use, activities including walking, abdominal obesity, high blood pressure, low HDL cholesterol, high triglyceride levels, high blood sugar, free T4, and thyroid peroxidase antibody (TPO Ab) (OR = 2.161, p = 0.041) [26].