INTROduCTION According to the World Health Organization, the number of diabetic patients will increase from 135 million in 1995 to 300 million in the first quarter of the 21st century. In Turkey, 5.2% of the population in 1995 had diabetes and it is estimated that this proportion will have reached 7.2% by 2025. 1 It is known that diabetes increases the risk of coronary artery disease, stroke, blindness, kidney failure, leg amputation, and early death. 2,3 Scientific evidence shows that diabetes-related complications may be prevented if a good metabolic control is achieved. 4,5 To achieve good metabolic control, it is important not only to measure glycated hemo globin (HbA 1c) levels regularly, but also to educate patients on diabetes. Sufficient knowledge can be acquired in diabetes education programs, 6-8 which not only develop patients' awareness and understanding of the disease and strengthen motivation and self-care, but also reduce the economic costs of diabetes treatment by preventing complications. 8 Despite clear evidence on the benefits of tight glycemic control in diabetics, 4,5 many patients are not able to reach an optimal glycemic target and thus fail to significantly reduce a long-term cardiovascular risk. 9,10 Moreover, it has been shown that inadequate knowledge about diabetes