The standardized regression coefficients of serum C-peptide level for total body bone mineral density from multiple regression analysis stratified by sex.

β coefficients are adjusted for age, ethnicity, height, weight, education level, physical activity, smoking status, alcohol use, C-reactive protein, triglycerides and creatinine level. In women, additionally adjusted for menopausal status. Model 1, the Model 2, additionally adjusted for the fasting plasma glucose. Model 3, additionally adjusted for the serum alkaline phosphatase. Slopes of regression at the Slopes of regression at the Slopes of regression significant at the FPG or ALP: fasting plasma glucose or alkaline phosphatase.