Review: patient education interventions improve glycaemic control in adults with diabetes mellitus.

Study selection and assessment: randomised controlled trials (RCTs) that were published from 1990–2000 in English, evaluated educational interventions in adult outpatients with diabetes, and reported on glycated haemoglobin (HbA1c) concentrations before and after the intervention and at >12 weeks after the intervention. An educational intervention was defined as any non-pharmacological educational technique that used physical, intellectual, or psychosocial means to improve the health of patients with diabetes.