A population-based study of the prevalence of diabetes and impaired glucose tolerance in adults in northern Sudan

OBJECTIVE - To study the prevalence of glucose intolerance in adult urban and rural populations in the northern parts of Sudan. RESEARCH DESIGN AND METHODS - A sample of 1,284 subjects aged greater than or equal to 25 years was selected using a multistage cluster method and underwent a 75-g oral glucose tolerance test. RESULTS - The crude prevalence was 3.4% (men, 3.5%; women, 3.4%) for diabetes and 2.9% (men, 2.2%; women, 3.3%) for impaired glucose tolerance (IGT). The highest crude prevalence was in the northern parts of Sudan (5.5%) and the lowest in the western desertlike parts (0.9%). Diabetes and IGT rates were nor different between the urban and rural populations. New cases (2.2%) were almost twice as prevalent as previously known cases (1.3%). Family history of diabetes, obesity, and advanced age were associated with higher rates of diabetes. CONCLUSION - The results showed a high prevalence of diabetes in the adult population of Sudan, with a wide difference among the different areas. The high ratio of newly discovered to previously known diabetic cases may reflect poor public awareness and medical services. These findings will certainly have far-reaching implications for diabetes care delivery in this country.