FIGURE 4.

Receiver operator curve. Area under the curve (AUC) was 0.85. A cutoff of Δ = 0.121 gave a sensitivity of 90% and a specificity of 87%.

Receiver operator curve. Area under the curve (AUC) was 0.85. A cutoff of Δ = 0.121 gave a sensitivity of 90% and a specificity of 87%.