Efficacy of community-based self-care interventions to improve biophysical, psychosocial or behavioural outcomes among community-dwelling older adults with type 2 diabetes: A systematic review and meta-analysis

•Review supported a collaborative approach for self-care interventions.•Review showed a predominance of biophysical outcomes for self-care interventions.•Future self-care interventions should include psychosocial and behavioural outcomes.•Future self-care interventions should consider the specific needs of older adults.•Future self-care interventions should focus on more ethnically diverse populations. This review assessed the efficacy of self-care interventions to improve biophysical, psychosocial or behavioural outcomes among older adults with diabetes. Computerised and manual searches were performed. A total of 18 randomised control trials were included in the review, of which eight were subsequently included in the meta-analysis. Most studies were from the United States of America and adopted a collaborative approach with participants. The specific needs of older adults were often not considered, and there was a predominance of biophysical measures. Meta-analysis revealed that among intervention condition participants, there were improvements in HbA1c (pooled weighted mean difference (WMD) −0.33, 95%CI −0.48 to −0.17), systolic blood pressure (WMD −1.55, 95%CI −2.93 to −0.18), diastolic blood pressure (WMD −1.41 95%CI −2.08 to −0.20), triglyceride (WMD −13.25, 95%CI –23.31 to −3.20), high-density lipoprotein (WMD 2.05, 95%CI 1.04 to 3.06) and Diabetes Self-Care Activities score (mean 4.10, 95%CI 3.11 to 5.10) compared to the control group. There was no significant change for low-density lipoprotein (WMD −5.93, 95%CI −12.08 to 0.22). While continuing to adopt a collaborative approach, future self-care interventions should incorporate psychosocial and behavioural outcomes, consider the specific needs of older adults, and focus on more ethnically diverse populations.