Figure 10

Sensitivity and specificity for the combined criteria around the optimal point (closest to 100% sensitivity and specificity) to differentiate between pathologial and physiological murmurs. (upper left) the highest frequency limit is 205 Hz and the relative duration is varied. (upper right) ROC vs. the relative duration around optimal point. (lower left) relative duration is fixed to 0.80 and the high frequency limit is varied. (lower right) ROC vs. the highest frequency limit around optimal point. Area under curve is 0.95.