This CMB-OC project, using Type II diabetes and Grade 3 hypertension as target conditions, employs surveys, in-depth interviews, focus groups, literature reviews, and service utilization records to compare the quality and efficiency of three types of collaborative models between hospitals and community health centers (CHCs) in urban areas of Jiangsu Province: 1) ownership of the CHCs by the hospital; 2) management of the CHCs by the hospital; and 3) independent management of the CHCs and hospital. One typical hospital-CHCs pair of each type is selected and 150 patients with diabetes and 150 with hypertension are recruited from each CHC for detailed assessment