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Table 6 Results for regression models with death as a dependent variable with ECGA and additional independent variables of the 977 cohort participants of men aged 45–50 at baseline in 1993 followed for 25 years

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

Death model

Independent variable(s)

Estimated OR

95% confidence interval for OR

p value for OR

Pseudo-R2 for model, %

ECGA only (model 1)

ECGA = 0

Reference

  

1.4

ECGA = 1

1.52

(0.83; 2.76)

0.106

ECGA = 9

2.09

1.26 3.46

0.001

FRI only (model 2)

FRI = 1

Reference

  

2.9

FRI = 2

0.68

(0.35; 1.31)

0.248

FRI = 3

0.77

(0.40; 1.46)

0.418

FRI = 4

1.51

(0.66; 2.67)

0.154

FRI = 5

2.16

(1.25; 3.73)

0.006

ECGA and FRI (model 3)

ECGA = 0

Reference

  

3.8

ECGA = 1

1.58

(0.85; 2.93)

0.146

ECGA = 9

1.84

(1.06; 3.20)

0.030

FRI = 1

Reference

  

FRI = 2

0.68

(0.35; 1.32)

0.256

FRI = 3

0.69

(0.36; 1.34)

0.272

FRI = 4

1.40

(0.75; 2.51)

0.246

FRI = 5

2.12

(1.22; 3.69)

0.007

ECGA and FRI variables (model 4)

ECGA = 0

Reference

  

8.3

ECGA = 1

1.41

(0.73; 2.73)

0.301

ECGA = 9

1.84

(1.01; 3.37)

0.048

ECGA and all explanatory variables (model 5)

ECGA = 0

Reference

  

13.8

ECGA = 1

1.42

(0.69; 3.02)

0.247

ECGA = 9

2.52

(1.27; 4.97)

0.021

  1. ECG category 0, ECG performed in 1993 and 1998, no ECGA; ECG category 1, ECG performed in 1993 and/or 1998 with one or more abnormalities; and ECG category 9, ECG performed in 1993 or 1998 without abnormality