Improvement in discrimination performance and calibration for risk prediction of cardiovascular events and all-cause death in the multivariate-adjusted model after including 25(OH)D concentrations.

AUC: area under the receiving operative characteristic curves; CI: confidence interval; HL: Hosmer-Lemeshow Goodness-of-Fit Test; CVD: cardiovascular disease; HT: hypertension; DM: diabetes mellitus; NRI: net reclassification improvement; IDI: integrated discrimination improvement; Established risk factors included age, sex, smoking status, systolic blood pressure, HDL cholesterol, and LDL cholesterol Improvement in discrimination performance and calibration for risk prediction of cardiovascular events and all-cause death in the multivariate-adjusted model after including 25(OH)D concentrations.