Duration of diabetes mellitus also increases the risk of non- hemorrhagic stroke (by 3%/y of diabetes duration).284 For those with prediabetes, fasting hyperglycemia is associated In a study of 43933 men (mean age, 44.3 9.9 years) free of known CVD and diabetes mellitus at baseline between 1971 and 2002, a total of 595 stroke events (156 fatal and 456 nonfatal strokes) occurred. Age-adjusted fatal, nonfatal, and total stroke event rates per 10000 person-years for normal fasting plasma glucose (80 109 mg/dL), impaired fasting glucose (110 125 mg/dL), and undiagnosed diabetes (Ptrend In the Greater Cincinnati/Northern Kentucky Stroke Study, ischemic stroke patients with diabetes mellitus were younger, more likely to be black, and more likely to have hypertension, MI, and high cholesterol than patients without diabetes mel- Age-specific incidence rates and rate ratios showed that diabetes mellitus increased ischemic stroke incidence for all ages but that the risk was most prominent before 55 years of age in blacks and before 65 years of age in whites. Although Mexican Americans had a substantially greater incidence rate for the com- bination of ischemic stroke and ICH than non-Hispanic whites,40 there is insufficient evidence that the presence of diabetes mel- litus or other forms of glucose intolerance influenced this rate. 