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Table 3 Incremental predictive values of FFAs for cardiovascular outcomes

From: Impact of free fatty acids on prognosis in coronary artery disease patients under different glucose metabolism status

  C-statistic (95% CI) ∆C-statistic (95% CI) p-value
Original Model 1 0.645 (0.618–0.672)
Original Model +Log2 FFAs 0.661 (0.634–0.688) 0.015 (0.005–0.027) 0.019
Original Model 2 0.626 (0.603–0.648)
Original Model 2 + Log2 FFAs 0.638 (0.616–0.661) 0.012 (0.003–0.020) 0.028
  1. C-statistic and ∆C-statistic were used to interpret efficiency of the models and the incremental value of adding FFAs into original model
  2. Original model included age, sex, body mass index, smoking, hypertension, family history of coronary artery disease, Gensini score, left ventricular ejection fraction, low density lipoprotein cholesterol, high lipoprotein cholesterol, triglyceride and baseline statins. Model 1 indicates the C-statistic for MACEs (cardiovascular mortality, non-fatal myocardial infarction, stroke and post-discharge unplanned revascularization). Model 2 indicates the C-statistic for composite endpoints (cardiovascular mortality, non-fatal myocardial infarction, and stroke)