Prognostic Value and Relative Cutoffs of Triglycerides Predicting Cardiovascular Outcome in a Large Regional-Based...

Area of Science:

• Cardiovascular Epidemiology
• Lipid Metabolism
• Preventive Cardiology

Background:

• Established association between elevated serum triglycerides and cardiovascular events.
• Uncertainty regarding the precise triglyceride level at which cardiovascular risk begins to increase.

Purpose of the Study:

• To identify the prognostic cutoff value of triglycerides for predicting cardiovascular events.
• To compare this novel cutoff with the conventional threshold in a large Italian cohort.

Main Methods:

• Utilized receiver operating characteristic (ROC) curve analysis to determine the prognostic cutoff.
• Employed multivariable Cox regression models to assess triglyceride cutoff values as independent predictors.
• Adjusted for numerous cardiovascular risk factors and medications.

Main Results:

• Identified a prognostic cutoff value of 89 mg/dL for cardiovascular events (sensitivity 76.6%, specificity 34.1%).
• Both the conventional (150 mg/dL) and the new (89 mg/dL) cutoff values were significant independent predictors of cardiovascular events.
• Hazard ratios were 1.211 for the conventional cutoff and 1.150 for the new cutoff.

Conclusions:

• A lower prognostic cutoff value for triglycerides (89 mg/dL) exists and is associated with increased cardiovascular risk.
• This finding suggests that cardiovascular risk associated with triglycerides may begin at lower levels than previously recognized.