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Table 5 Comparison of models for prediction of CVD and CHD mortality without and with addition of electrocardiographic abnormalities

From: Trends in electrocardiographic abnormalities and risk of cardiovascular mortality in Lithuania, 1986–2015

ECG

CVD mortality

CHD mortality

abnormalities

Men n = 281

Women n = 167

Men n = 172

Women n = 96

 

Model 1

Model 2

Model 1

Model 2

Model 1

Model 2

Model 1

Model 2

  

HR (95% CI)

 

HR (95% CI)

 

HR (95% CI)

 

HR (95% CI)

No

1

1

1

1

Yes

2.34 (1.72–3.19)

1.56 (1.09–2.24)

2.15 (1.44–3.22)

1.71 (1.07–2.73)

Harrell‘s C

0.704

0.730

0.803

0.814

0.715

0.745

0.829

0.842

LRT (p-value)

24.62 (< 0.001)

5.48 (0.019)

12.02 (< 0.001)

4.79 (0.029)

IDI (p-value)

0.013 (0.007)

0.004 (0.040)

0.010 (< 0.001)

0.004 (0.173)

NRI (p-value)

0.186 (0.007)

0.186 (0.153)

0.252 (0.027)

0.212 (0.206)

  1. Model 1 – factors included into model: age, education, arterial hypertension, high density lipoprotein cholesterol, low density lipoprotein cholesterol, triglycerides, body mass index, smoking; Model 2 – variables of Model 1 plus ECG abnormalities
  2. CHD coronary heart disease, CI confidence interval, CVD cardiovascular diseases, HR hazard ratio, IDI integrated discrimination improvement, LRT likelihood ratio test, NRI net reclassification index
  3. Bold typeface indicates significance