(f).

Citation/level and Quality	Purpose	Sample/setting	Design	Results/conclusion	Recommendations
Rawal, et al. [42] Johns Hopkins level: I Quality: high quality	To review the cost-effectiveness of nonpharmacological interventions aimed at preventing T2DM and its related complications in developing countries such as Africa and Asia.	Nine studies were included in this review Publications conducted in patients with type 2 diabetes in developing countries.	Systematic review of RCTs.	The result of the review showed a significant reduction in the development of T2DM in the intervention group compared with controls. The study comprised three lifestyle intervention groups (diet, exercise, and diet + exercise), with one control group with no life style intervention measures.	Future programs should focus on the appropriate development, adaptation, and implementation of efficacious, cost-effective intervention methods through health education and promotion, and creating support group.