G-CREDIT (Gangnam-Cohort for Risk Evaluation of Diabetes and Impaired Glucose Tolerance)

The prevalence of type 2 diabetes has consistently increased and type 2 diabetes can cause many types of vascular complications. Diabetes develops due to glucose intolerance. Early detection and intervention in the stage of glucose intolerance makes it afford to prevent overt diabetes and its complications. This study was designed to make a cohort of korean patients with glucose intolerance to construct a long term database about clinical characteristics of these patients.

Inclusion Criteria:

1. Patients older than 20 years old who has visited Gangnam severance hospital since January 2007.
2. Patients with either diabetes or impaired glucose tolerance
3. Patients with at least 6 months of follow-up period

Exclusion Criteria:

1. Patients with gestational diabetes, any active stage of cancer and severe disability