Table 2 Differentiation accuracy for AESD and PFS based on absolute power spectrum and phase lag index values.

From: Automated differentiation of acute encephalopathy with biphasic seizures and late reduced diffusion and prolonged febrile seizures in acute phase

 

Frequency band

Mean accuracy (%)

Sensitivity (%)

Specificity (%)

PPV (%)

NPV (%)

AUC

Mean absolute power spectrum value

Delta

47.0

59.5

41.0

33.0

67.5

0.50

Theta

70.5

72.5

69.5

53.7

83.8

0.80

Alpha

79.5

61.3

83.2

64.1

81.5

0.80

Beta

82.8

86.9

80.1

68.8

92.7

0.92

Gamma

72.5

86.9

65.5

55.2

91.1

0.81

Mean phase lag index value

Delta

52.9

40.2

59.1

32.4

66.9

0.53

Theta

57.0

78.3

74.4

29.1

66.0

0.51

Alpha

51.1

41.1

55.9

31.3

66.1

0.49

Beta

55.8

24.9

71.0

29.5

65.9

0.54

Gamma

43.0

72.9

28.4

33.2

68.2

0.49

  1. Abbreviations: AESD, acute encephalopathy with biphasic seizures and late reduced diffusion; AUC, area under the curve; EEG, electroencephalography; NPV, negative predictive value; PFS, prolonged febrile seizure; PPV, positive predictive value. To validate differentiation accuracies, k-fold cross-validation was performed using MATLAB. Data were divided into a training set (80%) and a test set (20%) for validation. A support vector machine algorithm was used as the classifier.
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