“…Peer support can be provided through individual or group approaches and either face-to-face, telephone or online contact. Peer support is a low-cost intervention, and has been suggested to reduce healthcare costs [4], including among people with Type 2 diabetes [5,6]. Analyses in studies on such interventions, however, either were only based on participants over the study period, without consideration of healthcare utilization across the whole study population [5], or findings were not derived from a trial [6].…”