Fig. 5.

Comparison of the receive operating characteristic (ROC) curve according to the durations of data processing. The ROC curves and optimal cut-off points using data summation according to the durations of data processing (original 1 second, 2 minutes, 4 minutes, 6 minutes, 8 minutes, 10 minutes) are described. As the durations of data summation increases, the area under the curve values are increased as well. The optimal cut-off points according to the durations of data summation are represented as circles.