Data were collected from T2DM patients who followed up at an internal medicine clinic of Hai Duong medical technical university hospital (HMTU hospital) Results: Results from multiple logistic regression analysis revealed that the factors influencing diet adherence were dietary self-efficacy (OR=0.91, 95% CI=0.84 - 0.99, p-value=0.04) and monthly household income $200 - 400 (OR=2.99, 95% CI=1.12 - 7.93, p-value=0.02), and monthly household income >$400 (OR=3.03, 95% CI=1.08 - 8.47, p-value=0.03).