Lower HbA1c targets are associated with better metabolic control

Area of Science:

• Pediatric Endocrinology
• Metabolic Diseases
• Clinical Research

Background:

• Previous research indicated a link between clear hemoglobin A1c (HbA1c) target setting and outcomes in adolescent diabetes care.
• The SWEET international diabetes registry provides a platform for large-scale pediatric diabetes research.

Purpose of the Study:

• To assess if the association between clear HbA1c target setting and improved glycemic control is consistent in a larger international cohort of children.
• To investigate the relationship between established HbA1c targets and actual metabolic control in pediatric diabetes centers.

Main Methods:

• A questionnaire was distributed to 76 SWEET centers, with 53 pediatric centers (70% response rate) included in the analysis.
• Data from 35,483 children were analyzed, with outcomes presented as medians and interquartile ranges.
• Linear regression, adjusted for age, diabetes duration, sex, and GDP, was used to examine the association between target HbA1c and mean outcome HbA1c.

Main Results:

• The median age of children across the studied centers was 13.3 years, with 49% females.
• A significant positive association was found between the centers' target HbA1c and the mean outcome HbA1c (p = 0.005), indicating lower targets correlated with better control.
• No association was demonstrated between the composition of diabetes teams and metabolic control.

Conclusions:

• This international study confirms that lower HbA1c targets are associated with better metabolic control in children with diabetes.
• The findings suggest that ambitious target setting may be a strategy to improve metabolic outcomes, although the direction of causality requires further investigation.
• Target setting practices appear to contribute to inter-center variability in HbA1c values.