Effectiveness of smartphone application–based self‐management interventions in patients with type 2 diabetes: A systematic review and meta‐analysis of randomized controlled trials

Aims To synthesize evidences on smartphone application–based intervention and determine its effectiveness on glycaemic control, self‐management behaviours, psychological well‐being, quality of life and cardiometabolic risk factors. Design A systematic review and meta‐analysis of randomized controlled trials (RCTs). Data sources Major English and Chinese electronic databases were searched from January 2008 to January 2021, including PubMed, Web of Science, Embase, Cochrane Central Register of Controlled Trials, Google Scholar, China National Knowledge Infrastructure (CNKI), Wanfang and Sinomed. Review methods RCTs were screened and selected if they used smartphone applications to support patients in the self‐management of diabetes. Data extraction and methodological assessment were performed by two reviewers independently. Meta‐analysis was performed to pool the intervention effect on outcomes of interest using RevMan 5.3. Results Across 19 included trials involving 2585 participants, smartphone application–based interventions were associated with a clinically and statistically significant reduction of glycated haemoglobin (HbA1c). Beneficial effects were also observed in participants’ behavioural performance, especially in medication adherence. Intervention effects on psychological status, quality of life and cardiometabolic risk factors were nonsignificant. Subgroup analysis showed interactive approach with medium frequency or flexible facilitator–patient interaction induced a larger effect on HbA1c reduction. Besides, patients with baseline HbA1c ≥9% benefited more than those with HbA1c