- Increasing HbA1c levels in newly diagnosed patients with type 2 diabetes (T2D) are associated with a greater incidence of long-term microvascular complications.
- Researchers studied patients with ≥3 HbA1c measurements during the first 6 years after T2D diagnosis (N=494; age, ≥40 years; 49.4% men), using adjusted Cox regression models to assess associations between early glycemic control and subsequent clinical outcomes over the course of 13 years of follow-up.
- Funding: Danish Medical Research Council; Danish Research Foundation for General Practice; Danish Ministry of Health; Novo Nordisk.
- Median HbA1c at 1 year after diagnosis was 60 mmol/mol (interquartile range [IQR], 52-71 mmol/mol) or 7.65% (IQR, 6.91%-8.62%).
- High HbA1c was associated with a higher risk for later T2D-related morbidity and mortality (P<.05>
- HbA1c increases within 6 years after diagnosis were associated with later microvascular complications (HR, 1.14; 95% CI, 1.05-1.24 per each 1.1 mmol/mol or 0.1% point increase), but not diabetes-related mortality, myocardial infarction, stroke, or peripheral vascular diseases.
- The study was observational, and researchers did not have access to treatment information or HbA1c measurements during follow-up.