Progression From Impaired Fasting Glucose to Type 2 Diabetes Mellitus Among Subjects With and Without Hypertension in Primary Care Setting

Inclusion Criteria:We include all subjects age ≥18 attended the study centers with laboratory diagnosis of IFG by blood sugar 6.1 mmol/l to 6.9 mmol/l checked from 2002 to 2007 in the 6 study centres. \- Exclusion Criteria:We excluded the subjects who have diagnosis of T2DM the years prior to the year of blood taken. We define T2DM by physician coding ICPC-2 of T90 Diabetes non-insulin dependent or prescription of antidiabetic drugs (British National Formulary(23) (BNF) section 6.1 and 6.2). We exclude the patients who had been admitted to Hong Kong Hospital Authority (HKHA)or attended HKHA specialty Clinic, or attended any GOPC with dispensing history of drug used in diabetes in BNF Section 6.1.1 insulins or 6.1.2 anti-diabetic drugs, or with ICPC coded with T90) during 1 Jan 2005 - 31 Dec 2006 (i.e. 2 year prior to starting of study period). We also excluded patient with the date of diagnosis of DM by above criteria earlier than the date of laboratory test results of IFG. \-