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

β coefficients are adjusted for gender, ethnicity, height, weight, education level, physical activity, smoking status, alcohol use, triglycerides and creatinine level. Model 1, the Model 2, additionally adjusted for the fasting plasma glucose. Model 3, additionally adjusted for the serum alkaline phosphatase. Slopes of regression significant at the Slopes of regression significant at the Slopes of regression significant at the

β系数（beta coefficients）已针对性别、种族、身高、体重、受教育水平、体力活动、吸烟状态、饮酒情况、甘油三酯及肌酐水平完成校正。模型1（Model 1）与模型2（Model 2）额外校正了空腹血糖（fasting plasma glucose）；模型3（Model 3）额外校正了血清碱性磷酸酶（serum alkaline phosphatase）。回归斜率在指定阈值处具有统计学显著性 回归斜率在指定阈值处具有统计学显著性 回归斜率在指定阈值处具有统计学显著性