Evaluation of the effects of a diabetes educational program: a randomized clinical trial

OBJECTIVE: Evaluate the effectiveness of a diabetes mellitus educational program in primary health care. METHODS: This cluster randomized trial was conducted in a sample of 470 people with type 2 diabetes mellitus from eight health units, randomly assigned to two groups: intervention (n = 231) and control (n = 239). The intervention group participated in the educational program composed of three strategies: group education, home visit, and telephone intervention. Simultaneously, the control group was monitored individually. Group monitoring took place over nine months in the year 2012. Clinical evaluations were performed at the initial time (T(0)), three (T(3)), six (T(6)) and nine (T(9)) months after the beginning of the intervention. RESULTS: After nine months of follow-up, 341 users remained in the study, 171 in the control group and 170 in the intervention group. The average age of users was 60.6 years. In both groups, statistically significant differences were observed in mean HbA1c levels over the follow-up time (p < 0.05). However, the mean HbA1c level at T(3), T(6) and T(9) times were significantly lower among the people in the intervention group (p < 0.05). CONCLUSIONS: The educational program model developed was effective to improve the glycemic control of the intervention group participants.