Two prospective studies found that elevated 2-hr glucose predicted male mortality independent of fasting glucose and HbA1c

Two prospective studies found that elevated 2-hr glucose predicted male mortality independent of fasting glucose and HbA1c.

Qiao Q, Dekker JM, de Vegt F, Nijpels G, Nissinen A, Stehouwer CD, Bouter LM, Heine RJ, Tuomilehto J.

Diabetes and Genetic Epidemiology Unit, National Public Health Institute, Mannerheimintie 166, FIN-00300 Helsinki, Finland. qing.qiao@ktl.fi

OBJECTIVE: To quantify the relative contribution of elevated 2-hr glucose, fasting glucose (FPG), and HbA1c to all-cause mortality. STUDY DESIGN AND SETTING: A joint analysis of two prospective studies with baseline glycemia measurements. RESULTS: The multivariate adjusted hazard ratios (HRs) corresponding to a one standard deviation increase in HbA1c were 1.14 (95% CI 1.03-1.25), 1.08 (0.98-1.19) for FPG and 1.15 (1.05-1.27) for 2-hr glucose, respectively. Entering the 2-hr glucose to the model based on the FPG and HbA1c significantly improved the prediction of mortality, whereas neither FPG, nor HbA1c added significant information once 2-hr glucose was in the models. In subjects with FPG <7.0 mmol/L and HbA1c < or = 6.5%, the HR was 1.35 (1.03-1.78) in men with 2-hr glucose > or = 7.8 mmol/L compared with men with 2-hr glucose <7.8 mmol/L. CONCLUSION: Elevated 2-hr glucose was a predictor of mortality independent of the levels of fasting glucose and HbA1c