After adjusting for anthropometric factors; family history of diabetes; biochemical parameters including C-reactive protein, A1C, and fasting glucose and postload 2-h glucose levels; and the use of lipid-lowering medications, the hazard risks of diabetes development were 1.23 (95% CI 1.06-1.42), 1.26 (1.04-1.54), and 1.60 (1.30-1.96), respectively, in the prehypertension, stage 1 hypertension, and stage 2 hypertension groups.