Clinical, metabolic and psychological outcomes and treatment costs of a prospective-randomized trial based on different educational strategies to improve diabetes care (PRODIACOR)

Abstract

Aim To evaluate the effect of system interventions (formalized data collection and 100% coverage of medications and supplies) combined with physician and/or patient education on therapeutic indicators and costs in Type 2 diabetes. Methods Randomized 2x2 design in public health, social security or private prepaid primary care clinics in Corrientes, Argentina. Thirty-six general practitioners and 468 adults with Type 2 diabetes participated. Patients of nine participating physicians were selected randomly and assigned to one of four structured group education programmes (117 patients each): control, physician education, patient education and both, with identical system interventions in all four groups. Outcome measures included glycated haemoglobin, body mass index, blood pressure, fasting glucose, lipid profile, drug consumption, resource use and patient well-being at baseline and every 6 months up to 42 months. Results Glycated haemoglobin decreased significantly from 0.34 to 0.84% by 42 months (P < 0.05); the largest and more consistent decrease was in the groups where patients and physicians were educated. Blood pressure and triglycerides decreased significantly in all groups; the largest changes were recorded in the combined education group. The WHO-5-Lowe score showed significant improvements, without differences among groups. The lowest treatment cost was seen in the combined education group. Conclusions In a primary care setting, educational interventions combined with comprehensive care coverage resulted in long-term improvement in clinical, metabolic and psychological outcomes at the best cost-effectiveness ratio. Trial registration NCT01456806 Keywords Type 2 diabetes management, patient and healthcare provider education, quality of care, patient satisfaction, psychological impact