Lipids & metabolic liver disease

Association between triglyceride glucose index and arterial stiffness and coronary artery calcification: a systematic review and exposure-effect meta-analysis

Cardiovasc DiabetolPublished Systematic review and meta-analysis of observational studies

Authors' conclusion

An elevated TyG index is associated with an increased risk of arterial stiffness and CAC. Prospective studies are needed to assess causality.

Study context

Population
Observational studies of the triglyceride and glucose (TyG) index and arterial stiffness or coronary artery calcification (CAC); PubMed, Cochrane Library and Embase until September 2022
Participants
87,307 participants26 observational studies
Comparison
Higher vs lower TyG index
Outcome
Arterial stiffness and CAC
Methodological detailsrandom-effects model, robust error meta-regression (exposure-effect)
  • Random-effects model
  • Robust error meta-regression (exposure-effect)

Pooled result

As reported in the abstract

Arterial stiffness, category analysis: OR
1.83 (95% CI 1.55-2.17, I2 = 68%)
CAC, category analysis: OR
1.66 (95% CI 1.51-1.82, I2 = 0)
Arterial stiffness, per 1-unit TyG increment: OR
1.51 (95% CI 1.35-1.69, I2 = 82%)
CAC, per 1-unit TyG increment: OR
1.73 (95% CI 1.36-2.20, I2 = 51%)
Positive nonlinear association of TyG index with arterial stiffness risk
Pnonlinearity < 0.001

Further pooled results

Progression of CAC

Category analysis: OR
1.66 (95% CI 1.21-2.27, I2 = 0)
Continuity analysis: OR
1.47 (95% CI 1.29-1.68, I2 = 41%)

Original publication

Association between triglyceride glucose index and arterial stiffness and coronary artery calcification: a systematic review and exposure-effect meta-analysis. Cardiovasc Diabetol. Published 13 May 2023. doi:10.1186/s12933-023-01819-2

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