Objective:To explore the effects of online and offline peer support on the quality of life in middle-aged and elderly patients with type 2 diabetes mellitus (T2DM) in the community.Methods:Two sub-communities were selected from a community health service center in Hengyang, Hunan province, and randomly divided into the control community and the intervention community by coin tossing. From November 2018 to March 2019, totally 40 middle-aged and elderly T2DM patients who met inclusion criteria were enrolled from the control and intervention communities and included into the control group and the...