<![CDATA[Background: Type 2 diabetes mellitus (T2DM) is an important public health concern, and prevention-related behaviors can begin during childhood. Objectives: This study examined associations between knowledge, lifestyle practices, family support, and self-reported T2DM prevention behaviors among school-aged children in Jombang, Indonesia. Methods: A quantitative cross-sectional study was conducted among 65 school-aged children recruited through purposive sampling in the Peterongan Community Health Center area, Jombang Regency, East Java, Indonesia. Data were collected from August to September 2026 using a structured questionnaire. Descriptive statistics and chi-square tests were used to examine associations between categorized study variables. Results: Good knowledge was observed in 36.9% of participants, healthy lifestyle practices in 40.0%, and high family support in 44.6%. Good T2DM prevention behaviors were reported by 43.1% of participants. Knowledge (p = 0.012), lifestyle practices (p < 0.001), and family support (p = 0.015) were significantly associated with prevention-behavior categories. Conclusion: Knowledge, lifestyle practices, and family support were associated with self-reported T2DM prevention behaviors in this sample. Because of the cross-sectional design, the findings do not establish causality or demonstrate differences in T2DM incidence or clinical outcomes. Larger studies are needed to assess these associations further.]]>
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