Table 3 Statistical values of SE, SP and ACR for VF differentiation from VT

1 sec

0.8351

0.8482

0.8424

0.8242

0.8302

0.8275

1.5 sec

0.8780

0.8698

0.8734

0.8689

0.8597

0.8637

2 sec

0.9080

0.8834

0.8942

0.9007

0.8798

0.8890

2.5 sec

0.9408

0.9158

0.9268

0.9381

0.9194

0.9277

3 sec

0.9608

0.9439

0.9513

0.9654

0.9489

0.9562

3.5 sec

0.9754

0.9669

0.9707

0.9818

0.9734

0.9771

4 sec

0.9854

0.9849

0.9851

0.9918

0.9885

0.9899

4.5 sec

0.9936

0.9914

0.9924

1

0.9986

0.9992

5 sec

1

0.9978

0.9988

1

1

1

5.5 sec

1

1

1

1

1

1