Secular trends in HbA1c levels among children and adolescents with type 1 diabetes - Report - MDSpire

Secular trends in HbA1c levels among children and adolescents with type 1 diabetes

  • By

  • Jung Chou

  • Chao-Hsu Lin

  • Shih-Kai Kevin Lin

  • Yann-Jinn Lee

  • Chi-Yu Huang

  • Yu-En Kao

  • Jia-Cian Yu

  • Wei-Hsin Ting

  • May 28, 2026

Share

Clinical Report: Trends Over Time in HbA1c Levels in Pediatric and Adolescent Patients with Type 1 Diabetes

Overview

This study evaluates the trends in HbA1c levels among pediatric and adolescent patients with type 1 diabetes (T1D) over 23 years, revealing a significant decline in HbA1c levels and variations based on sociodemographic factors. The findings underscore the impact of advancements in diabetes management on glycemic control in this population.

Background

Type 1 diabetes (T1D) is associated with serious long-term complications, making effective glycemic control crucial for improving patient outcomes. The management of T1D has evolved significantly, particularly in Taiwan, with advancements in technology and healthcare policies. Understanding trends in HbA1c levels is essential for assessing the effectiveness of these interventions and guiding future clinical practices.

Data Highlights

YearMean HbA1c (%)
20009.17
20237.99

Key Findings

  • HbA1c levels declined significantly from 9.17% in 2000 to 7.99% in 2023 (β = −0.037% per year, p < 0.001).
  • The overall decrease in HbA1c over 23 years was approximately 0.84%.
  • Improvement in HbA1c levels varied significantly by sex, DKA status at presentation, and age group at diagnosis.
  • Adolescents aged 12–18 years had the highest HbA1c levels but also showed the steepest rate of improvement (β = −0.084%/yr).
  • The proportion of patients achieving HbA1c <7.0% increased significantly (OR = 1.029 per year, p = 0.002).
  • No significant improvement was observed in the youngest age group (0–6 years).

Clinical Implications

The significant decline in HbA1c levels among pediatric patients indicates that advancements in diabetes management are effective. However, the persistent high levels in adolescents highlight the need for targeted interventions in this age group to enhance glycemic control. Clinicians should consider individual patient factors when setting glycemic targets.

Conclusion

Overall, the study demonstrates a positive trend in glycemic control among children and adolescents with T1D, while also identifying specific subgroups that require additional focus to improve outcomes.

Related Resources & Content

  1. Author(s)/Org, Source, Year -- Impact of Glycemic Management on Final Adult Height: A Comprehensive Study of Childhood Type 1 Diabetes in Sweden
  2. Author(s)/Org, Source, Year -- Variations in Clinical Presentation and HLA Genetic Factors in Hispanic Children at the Onset of Type 1 Diabetes
  3. Author(s)/Org, Source, Year -- Variations in Glucagon Secretion Following Oral Glucose in Individuals Across Different Phases of Type 1 Diabetes Progression
  4. Author(s)/Org, Source, Year -- Children and Adolescents: Standards of Care in Diabetes—2026
  5. The Journal of Clinical Endocrinology & Metabolism — Impact of Exercise Patterns on Nighttime Hypoglycemia Incidents in Youth with Type 1 Diabetes
  6. Automated Insulin Delivery Systems and Glucose Management in Children and Adolescents With Type 1 Diabetes: A Systematic Review and Meta-Analysis
  7. Automated insulin delivery use in children and adolescents with type 1 diabetes across the world
  8. 14. Children and Adolescents: Standards of Care in Diabetes—2026 - PMC

Original Source(s)

Related Content