Effects of the Motivation Interviewing on Blood Glucose among Uncontrolled Type II Diabetic Patients at a Primary Care Unit in Bangkok

Abstract

Type 2 diabetes is a major public health problem in Thailand with an increasing trend. Poor glycemic control can lead to serious complications. Motivational Interviewing (MI) is an effective method for modifying health behaviors. This quasi-experimental study aimed to examine the effect of MI on glycemic control and Body Mass Index (BMI) among patients with uncontrolled type 2 diabetes. A total of 42 participants were divided into experimental and control groups, with 21 in each group. The experimental group received brief MI sessions in addition to standard care for 3 months, while the control group received standard care only. HbA1c and BMI were measured before and after the intervention. Data were analyzed using the Wilcoxon Signed-Rank Test to compare within-group differences and the Mann–Whitney U Test to compare between-group differences. The results showed that both groups had significant reductions in HbA1c (p-value < 0.001 and p-value < 0.05, respectively). However, when comparing the change in HbA1c between the two groups, no statistically significant difference was observed (p-value > 0.05). BMI did not change significantly in either group before and after the intervention. In conclusion, HbA1c levels in the group receiving MI combined with standard care were not significantly different from those in the group receiving standard care alone, which may be explained by the effectiveness of the existing standard treatment.