"The objectives of this review were as follows: 1. to reconsider the aims of screening for undiagnosed diabetes, and whether screening should be for other abnormalities of glucose metabolism such as IGT, or the ,metabolic syndrome- 2. to update the previous review for the NSC on screening for diabetes, including reviewing choice of screening test 3. to consider what measures would be taken if IGT and IFG were identified by screening, and in particular to examine evidence on treatment to prevent progression to diabetes in these groups 4. to examine the cost-effectiveness of screening, by a review of previous economic models, and by new modelling to take account of recent developments in treatment such as the use of statins 5. as part of the economic analysis, to consider groups at higher risk at which screening might be targeted 6. to identify research needs." (from executive summary)