This randomized controlled study aims to evaluate the effect of mobile application-supported education based on the Health Promotion Model on diabetes management in adolescents aged 12-18 years with Type 1 Diabetes Mellitus. The study will be conducted in a pediatric endocrinology clinic. Participants will be randomly assigned to intervention and control groups. The intervention group will receive mobile application-based diabetes education, while the control group will receive standard care. Outcomes of the study include diabetes knowledge level, self-efficacy, blood glucose monitoring skills, and HbA1c levels.

This study is designed as a randomized controlled trial conducted in adolescents diagnosed with Type 1 Diabetes Mellitus. The intervention is based on the Health Promotion Model and delivered through a mobile application including educational modules and interactive content. Data will be collected using validated scales and clinical parameters such as HbA1c. The effectiveness of the intervention will be evaluated through pre-test, post-test, and follow-up measurements.

Inclusion Criteria:

• Adolescents aged between 12 and 18 years

  • Diagnosed with Type 1 Diabetes Mellitus
  • Able to use a smartphone
  • Willing to participate in the study
  • Provided informed consent (from parents/guardians if under 18)

Exclusion Criteria:

Presence of any severe chronic disease other than Type 1 Diabetes

• Cognitive or psychiatric conditions that may affect participation
• Participation in another intervention study
• Inability to use a mobile application

Individual participant data will not be shared due to privacy and ethical considerations.