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. 2017 Sep 25;7:12259. doi: 10.1038/s41598-017-12539-5

Table 2.

Mean classification performance of morphometric indicators over 1000 subsplitting-based permuted SVM simulations.

Independent variables Accuracy Specificity Sensitivity AUC
Size and Shape Space
Endo angle PC1/PC2 0.63 0.49 0.78 0.68
Endo angle PC1/PC3 0.60 0.48 0.72 0.63
Endo trajectory size 0.75 0.69 0.81 0.78
Endo trajectory shape first 15 PCs 0.79 0.76 0.82 0.87
Linear Shift Endo PC1 evaluated at all homologous times 0.80 0.74 0.85 0.88
Linear Shift Endo PC2 evaluated at all homologous times 0.74 0.78 0.70 0.82
Linear Shift Endo PC3 evaluated at all homologous times 0.83 0.80 0.85 0.90
Linear Shift Endo PC1-PC10 evaluated at all homologous times 0.93 0.92 0.94 0.98
Epi angle PC1/PC2 0.51 0.48 0.53 0.52
Epi angle PC1/PC3 0.66 0.55 0.77 0.68
Epi trajectory size 0.58 0.60 0.56 0.60
Epi trajectory shape first 15 PCs 0.79 0.78 0.80 0.86
Linear Shift Epi PC1 evaluated at all homologous times 0.76 0.77 0.74 0.83
Linear Shift Epi PC2 evaluated at all homologous times 0.74 0.75 0.73 0.81
Linear Shift Epi PC3 evaluated at all homologous times 0.70 0.70 0.70 0.76
Linear Shift Epi PC1-PC10 evaluated at all homologous times 0.85 0.86 0.84 0.93
Shape Space
Endo angle PC1/PC2 0.67 0.53 0.80 0.70
Endo angle PC1/PC3 0.68 0.54 0.83 0.71
Endo trajectory size 0.77 0.71 0.83 0.78
Endo trajectory shape first 15 PCs 0.72 0.74 0.71 0.79
Linear Shift Endo PC1 evaluated at all homologous times 0.83 0.79 0.87 0.92
Linear Shift Endo PC2 evaluated at all homologous times 0.79 0.81 0.76 0.87
Linear Shift Endo PC3 evaluated at all homologous times 0.81 0.84 0.78 0.89
Linear Shift Endo PC1-PC10 evaluated at all homologous times 0.94 0.93 0.96 0.98
Epi angle PC1/PC2 0.56 0.63 0.50 0.58
Epi angle PC1/PC3 0.59 0.64 0.55 0.62
Epi trajectory size 0.61 0.50 0.72 0.62
Epi trajectory shape first 15 PCs 0.75 0.75 0.75 0.84
Linear Shift Epi PC1 evaluated at all homologous times 0.76 0.79 0.73 0.84
Linear Shift Epi PC2 evaluated at all homologous times 0.73 0.78 0.67 0.79
Linear Shift Epi PC3 evaluated at all homologous times 0.67 0.70 0.65 0.73
Linear Shift Epi PC1-PC10 evaluated at all homologous times 0.86 0.88 0.83 0.93
Traditional Indicators
Ejection fraction 0.85 0.83 0.88 0.90
ES volume 0.86 0.90 0.89 0.91
ED volume 0.80 0.78 0.84 0.84