Table 4 Expert Cardiologist analysis of the discordant ECGs between the 5 researchers

DISCORDANCE

1PC

3PC + iC

EC

Etiophatology

 1

1 YES

1 NO

1 NO

QRS complex duration

DISCORDANCE

2PC

2PC + iC

EC

Etiophatology

 2

2 YES

2 NO

2 NO

1 Axis

1 Morphology

 3

3 NO

3 YES

2 NO

1 YES

2 Axis

1 QRS complex duration

DISCORDANCE

3PC

1PC + iC

EC

Etiophatology

 -

–

–

–

–

DISCORDANCE

4PC

iC

EC

Etiophatology

 4

4 NO

4 YES

4 YES

4 QRS duration

 1

1 YES

1 NO

1 NO

1 Morphology

DISCORDANCE

1PC

3PC + iC

EC

Etiophatology

 8

8 YES

8 NO

1 YES

7 NO

1 Morphology

4 Morphology

3 Axis

 2

2 NO

2 YES

2 NO

1 Axis

1 Morphology

DISCORDANCE

2PC

2PC + iC

EC

Etiophatology

 6

6 NO

6 YES

1 YES

5 NO

1 Morphology

4 Morphology

1 Axis

 1

1 YES

1 NO

1 NO

1 Morphology

DISCORDANCE

3PC

1PC + iC

EC

Etiophatology

 -

–

–

–

–

DISCORDANCE

4PC

iC

EC

Etiophatology

 14

14 YES

14 NO

9 YES

5 NO

13 Morphology

1 QRS complex duration

 10

10 YES

10 NO

5 YES

5 NO

9 Morphology

1 Axis