en <p style="text-align:justify"><span style="font-size:12pt"><strong><span style="font-size:10.0pt"><span style="color:#f79646">Aims</span></span></strong><strong><span style="font-size:10.0pt"><span style="color:#f79646">:</span></span></strong> <span style="font-size:10.0pt">This study aimed to assess the effectiveness of a health education program in increasing knowledge, promoting healthy behavior, glycemic control, and improving the quality of life of patients with diabetes mellitus.</span></span></p> <p style="text-align:justify"><span style="font-size:12pt"><strong><span style="font-size:10.0pt"><span style="color:#f79646">Materials & Methods</span></span></strong><strong><span style="font-size:10.0pt"><span style="color:#f79646">:</span></span></strong> <span style="font-size:10.0pt">This study used quantitative methods, a survey design, and data analysis using Structural Equation Modeling - Partial Least Squares in Surabaya from September to November 2024. Data were collected through questionnaires distributed to diabetes mellitus patients in the Gresik Regency. The sampling technique used cluster sampling, considering age, gender, and education level.</span></span></p> <p style="text-align:justify"><span style="font-size:12pt"><strong><span style="font-size:10.0pt"><span style="color:#f79646">Findings</span></span></strong><strong><span style="font-size:10.0pt"><span style="color:#f79646">:</span></span></strong> <span style="font-size:10.0pt">The health education program significantly improved patients&#39; understanding of diabetes management. Knowledge scores increased significantly (p=0.038) after the intervention (4.2&plusmn;0.8) compared to before (3.1&plusmn;1.0). The adoption of healthy behaviors also increased (4.0&plusmn;0.9; p=0.042). In addition, the program positively impacted glycemic control, with a decrease in mean HbA1c from 8.5% to 7.2% (p=0.044). Patients&#39; quality of life improved significantly, both in physical and psychosocial aspects, with a difference in scores before (3.8&plusmn;1.1) and after (4.5&plusmn;0.7) the intervention (p=0.005). </span></span></p> <p><strong><span style="font-size:10.0pt"><span style="color:#f79646">Conclusion:</span></span></strong> <span style="font-size:10.0pt">Increased knowledge, adoption of healthy behaviors, glycemic control, and quality of life positively influence the effectiveness of the transtheoretical model health education program. </span></p> Diabetes Mellitus,Health Education,Kidney Complications,Transtheoretical Model, 37 42 http://ijwph.daneshafarand.org/browse.php?a_code=A-10-2267-1&slc_lang=en&sid=3 H.I. Muhalla 1003194753284600379650 1003194753284600379650 Yes Nursing Doctoral Program, Faculty of Nursing, Airlangga University, Surabaya, Indonesia N. Nursalam 1003194753284600379605 1003194753284600379605 No Department of Advanced Nursing, Faculty of Nursing, Airlangga University, Surabaya, Indonesia A. Yusuf 1003194753284600379604 1003194753284600379604 No Department of Advanced Nursing, Faculty of Nursing, Airlangga University, Surabaya, Indonesia A. Bakar 1003194753284600379565 1003194753284600379565 No Department of Advanced Nursing, Faculty of Nursing, Airlangga University, Surabaya, Indonesia N.D. Kurniawati 1003194753284600379564 1003194753284600379564 No Department of Advanced Nursing, Faculty of Nursing, Airlangga University, Surabaya, Indonesia A.S. Wahyudi 1003194753284600379563 1003194753284600379563 No Department of Advanced Nursing, Faculty of Nursing, Airlangga University, Surabaya, Indonesia A. Ma'ruf 1003194753284600379562 1003194753284600379562 No Department of Veterinary Medicine, Faculty of Veterinary Medicine, Airlangga University, Surabaya, Indonesia