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Table 1 Efficacy of QT interval index in differential diagnosis of VVS and epilepsy in children

From: The value of QT interval in differentiating vasovagal syncope from epilepsy in children

Index

AUC

P

95%CI

Optimal truncation value (ms)

Sensitivity (%)

Specificity (%)

Positive likelihood ratio

Negative likelihood ratio

Yoden index (%)

QTmax

0.512

0.829

0.404 ~ 0.619

403.00

30.36

80.70

1.57

0.86

11.06

QTmin

0.447

0.333

0.340 ~ 0.554

347.33

25.00

78.95

1.19

0.95

3.95

QTd

0.576

0.165

0.470 ~ 0.681

37.00

92.86

24.56

1.23

0.29

17.42

QTcmax

0.758

0.000

0.671 ~ 0.845

479.84

62.50

77.19

2.74

0.48

39.69

QTcmin

0.693

0.000

0.596 ~ 0.790

398.90

82.14

50.88

1.67

0.35

33.02

QTcd

0.631

0.016

0.529 ~ 0.733

53.56

82.14

38.60

1.34

0.46

20.74

  1. Note: QTmax: maximum QT interval. QTmin: minimum QT interval. QTd: QT interval dispersion. QTcmax: corrected maximum QT interval. QTcmin: corrected minimum QT interval. QTcd: corrected QT interval dispersion. AUC: area under the curve. 95% CI: 95%confidence interval