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Table 4 Statistics for model improvement with the addition of HbA1c content

From: Adjustment of the GRACE score by HemoglobinA1c enables a more accurate prediction of long-term major adverse cardiac events in acute coronary syndrome without diabetes undergoing percutaneous coronary intervention

   p value
Events, n (%) 69 (12.9)  
Nonevents, n (%) 464 (87.1)  
Continuous NRI (%)   
 cNRIevent 42  
 cNRInonevent 28  
 cNRI 70 (95 % CI 47–94) <0.001
 IDI statistics
 IDI 0.055 (95 % CI 0.035–0.075) <0.001
AUC   
 GRACE risk score 0.75 (95 % CI 0.69–0.82)  
 GRACE + HbA1c 0.80 (95 % CI 0.75–0.85)  
 Difference 0.05 0.012
  1. 95 % CI 95 % confidence interval, IDI integrated discrimination improvement, NRI net reclassification improvement, cNRI continuous net reclassification improvement