期刊
CARDIOVASCULAR DIABETOLOGY
卷 21, 期 1, 页码 -出版社
BMC
DOI: 10.1186/s12933-021-01432-1
关键词
Diabetes mellitus type 2; Venous thromboembolism; VTE; Glycemic control; HbA1c; Sex; Case-control study
Our study found no association between glycemic control, measured by HbA1c levels, and the risk of VTE. However, when the most recent HbA1c value recorded within 90 days before the index date, women with HbA1c levels > 7.0% had a 36-55% increased relative risk of VTE compared to women with HbA1c levels > 6.5-7.0%. There was no observed effect of glycemic control on the risk of VTE in men.
Background Previous studies suggested an elevated risk of venous thromboembolism (VTE) among patients with type 2 diabetes mellitus (T2DM), with a possible sex difference. The impact of glycemic control on the risk of VTE is unclear. Our objective was to analyze the association between glycemic control and the risk of unprovoked (idiopathic) VTE in men and women with T2DM. Methods We conducted a nested case-control analysis (1:4 matching) within a cohort of patients with incident T2DM between 1995 and 2019 using data from the CPRD GOLD. We excluded patients with known risk factors for VTE prior to onset of DM. Cases were T2DM patients with an unprovoked treated VTE. The exposure of interest was glycemic control measured as HbA1c levels. We conducted conditional logistic regression analyses adjusted for several confounders. Results We identified 2 ' 653 VTE cases and 10 ' 612 controls (53.1% females). We found no association between the HbA1c level and the risk of VTE in our analyses. However, when the most recent HbA1c value was recorded within 90 days before the index date, women with HbA1c levels > 7.0% had a 36-55% increased relative risk of VTE when compared to women with HbA1c > 6.5-7.0%. Conclusions Our study raises the possibility that female T2DM patients with HbA1c levels > 7% may have a slightly higher risk for unprovoked VTE compared to women with HbA1c levels > 6.5-7.0%. This increase may not be causal and may reflect differences in life style or other characteristics. We observed no effect of glycemic control on the risk of VTE in men.
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