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Table 3 Quantitative estimation of positioning

From: An automatic segmentation method for heart sounds

UMich no. Heart sound types Length (s) Cycle number TP FN FP TN Se/ % PPV/ % Acc/ %
1 Normal S1 and S2, Apex 69 87 174 0 0 0 100 100 100
2 Split S1, Apex 71 102 204 0 0 0 100 100 100
3 S4 Gallop, Apex 75 93 279 0 0 0 100 100 100
4 Mid Systolic Click, Apex 60 72 144 0 2 0 100 98.63 98.63
5 S3 Gallop, Apex 68 81 243 0 0 0 100 100 100
6 Early Systolic Murmur, Apex 60 66 132 0 0 0 100 100 100
7 Mid Systolic Murmur, Apex 67 72 144 0 0 0 100 100 100
8 Late Systolic Murmur, Apex 61 63 126 0 0 0 100 100 100
9 Holosystolic Murmur, Apex 60 63 126 0 0 0 100 100 100
10 Systolic Click and Late Systolic Murmur, Apex 61 72 144 0 0 0 100 100 100
11 S4 and Mid Systolic Murmur, Apex 65 87 261 0 0 0 100 100 100
12 S3 and Holosystolic Murmur, Apex 64 87 261 0 0 0 100 100 100
14 Normal S1 and S2, Aortic 61 69 138 0 0 0 100 100 100
16 Early Diastolic Murmur, Aortic 61 81 162 0 0 0 100 100 100
18 Single S2, Pulmonic 61 69 138 0 0 0 100 100 100
23 Ejection Systolic Murmur and Single S2 and Ejection Click, Pulmonic 75 87 174 0 0 0 100 100 100
Total 1039 1251 2850 0 2 0 100 99.93 99.93