A high prevalence of diabetes mellitus and impaired glucose tolerance in the Danagla community in northern Sudan.

The prevalence and associated factors of diabetes mellitus (DM) and impaired glucose tolerance (IGT) were studied in a tribal community with an apparently high diabetes prevalence. A sample of 724 subjects aged > or = 25 years was selected using a multi-stage cluster method and underwent a 75 g oral glucose tolerance test. The crude prevalence of DM and IGT were 8.3% (men 9.9%; women 7.5%) and 7.9% (men 4.1%; women 9.7%), respectively. Age-adjusted prevalence rates, according to the standard population of Segi, were 10.4% (95% CI 7.7-13.2) and 9.8% (95% CI 7.2-12.5) for DM and IGT, respectively. No urban/rural differences were found in the prevalence rates of DM and IGT. New cases (5.1%) were almost twice as common as previously known cases (3.2%). Family history of diabetes, obesity, and advanced age were associated with higher rates of diabetes. The results confirmed that diabetes is common in the Danagla community compared to other communities of northern Sudan. Varying environmental, nutritional, and genetic factors may contribute to this high prevalence. These findings will have profound impact on the health services for this community and the Sudan as a whole.

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 > or = 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 desert-like parts (0.9%). Diabetes and IGT rates were not 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.