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Table 9 Number of ECG deviations in 1998 follow-up

From: Prospective associations between ECG abnormalities and death or myocardial infarction in a cohort of 980 employed, middle-aged Swedish men

Minnesota Code

Explanation

Investigated persons

Observed findings

Findings with death

Findings with infarct

p value death

p value infarct

Q and QS patterns

 1:1

Q and QS pattern

944

15

2 (13)

3 (20)

  

 1:2

Q, QS, and QSR pattern

942

16

1 (6)

3 (19)

  

STJ and segment depression

 4:1 or 4:2

STJ depression

926

18

4 (22)

4 (22)

0.054

0.041

T wave items

T wave negative or biphasic

      

 5:1 or 5:2

 

924

19

4 (21)

5 (26)

0.072

0.006

AV conduction defect

 6:1

Complete AV block

945

0

    

 6:4:1

Wolf-Parkinson-White pattern

945

0

    

 6:8

Artificial pacemaker

945

0

    

Ventricular conduction defect

 7:1:1

Complete left bundle branch block

945

1

0

0

  

 7:2:1

Complete right bundle branch block

945

9

1 (11)

2 (22)

  

 7:3

Incomplete RBB

945

26

3 (12)

5 (19)

  

 7:4

Intraventricular block

944

4

0

0

  

 7:6

Incomplete LBB

919

5

1 (20)

1 (20)

  
  1. The p values refer to death and infarct risk comparisons between persons with and without ECG abnormalities. Only p values smaller than 0.100 are shown. Note that the p values themselves are due to variation. Even one single finding more or less might change the p value substantially. Percentages in brackets