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Background: Diabetes and dysglycemia have a high prevalence in
Iranian population but the information about their impact on the cardiovascular
disease (CVD) risk is scarce in this population. This study aimed
to determine the risk of CVD according to glucose tolerance status.
Methods: We ascertained cases with incident CVD in a
population of 1752 men and 2273 women, 40 years old and over and free of CVD at the
beginning of study, during a follow up with a median of 7.6 years. To
calculate hazard ratio (HR) for CVD, we controlled traditional risk factors, including
age, body mass index, waist, total cholesterol, HDL-cholesterol, triglycerides,
systolic blood pressure, diastolic blood pressure, education, smoking,
hypertension medication, lipid lowering medication and family history of
premature CVD and diabetes.
Results: Cardiovascular events
occurred in 197 men and 143 women. Its incidence density was 11.8 per 1000 person-years
(95%
confidence interval: 10.6 to 13.1) totally. Multiple adjusted HR in women with
known diabetes was 3.88 (95%CI: 2.40 to 6.27) and with newly diagnosed was 2.34 (95%CI: 1.39 to 3.95) and the
corresponding values for men were 1.72 (95%CI: 1.00- 2.95) and 1.52 (95%CI: 1.01- 2.31) respectively. Impaired fasting glucose and impaired
glucose tolerance increased 56% the risk of CVD in women (HR:
1.56 with 95% CI, 1.00 to 2.45), just in
the age adjusted model.
Conclusion: All diabetic patients should receive primary
prevention for CVD
intensively, regardless of whether they are newly diagnosed or are known cases
specially, females who have abnormal glucose metabolism.
