Association between sodium excretion quartiles and impaired fasting glucose (IFG) according to age.

IFG was defined as a fasting glucose ≥ 110 mg/dL. Risks of IFG was adjusted by gender, systolic blood pressure, body mass index, hemoglobin, estimated glomerular filtration rate, high density lipoprotein, aspartate aminotransferase, alanine aminotransferase, energy intake, myocardial infarction, angina, stroke, malignancy, current smoker, and alcohol. a. Adjusted risks of IFG according to sodium excretion in age group 20–39 years. b. Adjusted risks of IFG according to sodium excretion in age group 40–64 years. c. Adjusted risks of IFG according to sodium excretion in age group 65–74 years. d. Adjusted risks of IFG according to sodium excretion in age group ≥ 75 years.