Fig. 3

The relationship between total cholesterol and total bone mineral density. A Each black hollow point exhibits one participant. B Solid red line illustrates the fitted smooth curve among variables. Two blue bands illustrate the 95% confidence interval of the fit. Gender, age, race/ethnicity, education level, marital status, ratio of family income-to-poverty, serum phosphorus, blood urea nitrogen, γ-glutamyl transferase, ALT, AST, lactate dehydrogenase, serum uric acid, triglycerides, BMI, waist circumference, calcium intake, serum calcium, alcohol consumption, high blood pressure, moderate activity, diabetes and smoking were adjusted