Table 3 ROC results of PEDV S1/S1T1/S1T2/S1T3 ELISA

cut-off

0.4129

0.7102

0.3311

0.3707

Sensitivity (%)

93.48

97.1

92.75

90.58

Specificity (%)

92

73.33

86.67

76

AUC

0.9683 ± 0.0110

0.9001 ± 0.0248

0.9392 ± 0.020

0.9044 ± 0.0234

95% confidence interval

0.9449 to 0.9916

0.8515 to 0.9487

0.8999 to 0.9785

0.8585 to 0.9504

P value

 < 0.0001

 < 0.0001

 < 0.0001

 < 0.0001