3.5 Optimal AWT of lesser LGE areas predicting AF drivers
An ROC curve analysis yielded an optimal cutoff value of 2.24 mm for
predicting the presence of an NPA in lesser LGE areas. As for the
optimal AWT, the sensitivity, specificity, and positive and negative
predictive values for the cutoff values were 85.0%, 59.5%, 27.4%,
95.7%, respectively. When the sensitivity rather than specificity was
prioritized, the optimal cutoff value was 2.08 mm. When the specificity
rather than sensitivity was prioritized, the optimal cutoff value was
2.40 mm. The sensitivity, specificity, and positive and negative
predictive values for each cutoff value are shown in Table 2 . A
representative case is shown in Figure 4 . Five NPAs were found
in lesser LGE areas where the AWT was thicker than 2.24 mm.