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FIGURE 1. (A) Linear regression analysis showed good relationship between T1 and T2 SDS (y = 0.689x + 799; r = 0.69; SEE = 0.06; P < 0.0001). (B) Bland–Altman analysis showed good agreement between T1 and T2 SDS. (C) ROC curve analysis identified cutoffs of 2.5 for T1 and 1.5 for T2 SDS as best separating patients with from those without coronary artery disease. (D) With these thresholds, global diagnostic accuracy was identical between T1 and T2 (0.80 vs. 0.81, P = NS).
