The effect of nurse-led telephone-based interventions on glycosylated hemoglobin levels in people with type 2 diabetes: A meta-analysis

Background: Telenursing interventions can contribute to achieving optimal glycemic control.

Aim: This meta-analysis aimed to determine the effect of nurse-led telephone-based interventions on glycosylated hemoglobin (HbA1c) levels in people with type 2 diabetes.

Methods: We searched electronic databases for studies published in English up to January 2023. This study was conducted in accordance with the PRISMA 2020 checklist. The intervention effects were pooled using a random-effects model. Two authors independently assessed the risk of bias using the Cochrane Collaboration tool.

Results: Eight studies involving 1179 people with type 2 diabetes were included in this study. Interventions were performed for 15-30 min and 5-16 calls. There was no evidence of a significant publication bias. The evaluation of meta-analysis data showed that nurse-led telephone-based interventions significantly reduced HbA1c levels in people with type 2 diabetes (mean difference = -0.53, 95% Confidence Interval [-0.89, -0.17], p = .003).

Linking evidence to action: Nurse-led telephone-based interventions focused on reducing glycosylated hemoglobin levels in people with type 2 diabetes can be used as an effective intervention to achieve glycemic control. We recommend holding an average of 15-25 min interviews once or twice a week.