Skip to main content

Table 4 Unadjusted Cox hazard ratio for the CMR parameters

From: Association of cardiovascular magnetic resonance-derived circumferential strain parameters with the risk of ventricular arrhythmia and all-cause mortality in patients with prior myocardial infarction and primary prevention implantable cardioverter defibrillator

 

Appropriate ICD therapy (30/121)

All-cause mortality without appropriate ICD therapy (23/121)

Cox HR (95%CI)

P value

Harrell’s C-statistic

Cox HR (95%CI)

P value

Harrell’s C-statistic

LVEF, per −10%

2.1 (1.4, 3.2)

0.001

0.70

1.5 (0.9, 2.4)

0.084

0.60

Total scar size, per 10 g

1.1 (1.0, 1.3)

0.030

0.65

1.2 (1.0, 1.3)

0.009

0.63

Scar core size, per 10 g

1.1 (1.0, 1.3)

0.115

0.60

1.2 (1.1, 1.4)

0.007

0.61

Scar border size, per 10 g

1.6 (1.2, 2.1)

0.009

0.65

1.4 (0.9, 2.0)

0.122

0.62

Global strain, per + 5%

2.9 (1.6, 5.2)

< 0.001

0.69

2.1 (1.1, 4.0)

0.020

0.64

Peak systolic strain rate, per + 0.25 1/s

2.3 (1.4, 3.7)

0.001

0.68

2.0 (1.2, 3.3)

0.011

0.66

Extent of impaired strain, %

 Severely (<−5%)

1.5 (1.1, 1.9)

0.005

0.64

1.5 (1.1, 2.1)

0.005

0.66

 Moderately (−5, −10%)

1.9 (1.4, 2.5)

< 0.001

0.71

1.4 (0.9, 2.0)

0.099

0.63

 Mildly (−10, −15%)

0.7 (0.4, 1.2)

0.203

0.59

0.8 (0.4, 1.4)

0.359

0.55

Early diastolic strain rate, per −0.25 1/s

1.1 (1.0, 1.2)

0.005

0.66

1.1 (1.0, 1.1)

0.066

0.61

Late diastolic strain rate, per − 0.25 1/s

1.1 (1.0, 1.2)

0.008

0.66

1.1 (1.0, 1.3)

0.008

0.71

Mechanical dispersion, per + 25 ms

1.1 (0.8, 1.6)

0.464

0.55

1.6 (1.1, 2.3)

0.014

0.66

Sphericity index, per + 0.1

1.2 (0.9, 1.5)

0.271

0.53

1.2 (0.9, 1.6)

0.296

0.58

  1. Abbreviations as in Table 2