A mail-out survey for this study was completed with 10,350 surveys mailed and 4,500 surveys returned (43%). Enrollment concluded 7/31/99 with 1,253 new subjects enrolled. Follow-up of the enrolled subjects is ongoing. Some descriptive analyses of the data revealed the prevalence of undiagnosed diabetes was 4.5%. Factors associated with unrecognized diabetes were the diagnosis of hypertension and history of a parent or sibling with diabetes. Having a primary care provider did not raise or lower the risk for unrecognized diabetes. Based on the new diagnosis, most patients found to have diabetes required a change in treatment either of their blood sugar or comorbid hypertension or hyperlipidemia in order to achieve targets recommended in published treatment guidelines. Patients reporting a primary care provider were no less likely to require a change in treatment.