Stratified analysis to identify candidate patients for reclassification.

Group 1: CAC = 0 and extended TAC = 0 (free of calcium). Group 2: CAC>0 or standard TAC>0. Group 3: CAC = 0 and standard TAC = 0 and extended TAC>0. CAC = Coronary artery calcium. Standard TAC was calculated only including segments 1 and 5. Extended TAC included all 5 segments (see Figure 1C).*p+pPatients were separated into subjects free of calcium (Group 1), those assessed with traditionally measured method (Group 2) and candidates for reclassifications that were exclusively assesed with the proposed extended method (Group 3).Stratified analysis to identify candidate patients for reclassification.