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Table 3 Cox Regression models for the combined endpoint of major adverse cardiovascular events (MACE)

From: Predictive value of cardiac magnetic resonance right ventricular longitudinal strain in patients with suspected myocarditis

MACE

Univariable analyses

Multivariable model 1a

Imaging parameter without RV GLS

Multivariable model 1b

Imaging parameter with

additional RV GLS

Multivariable model 1c

Imaging parameter with

RV GLS instead of LV GLS

 

HR (95% CI)

p value

HRadjusted (95% CI)

p value

HRadjusted (95% CI)

p value

HRadjusted (95% CI)

p value

Clinical characteristics

        

 Age [years]

1.01 (1.00–1.03)

0.022

      

 Gender [male]

0.65 (0.45–0.94)

0.023

      

 Troponin T peaka [ng/l]

0.99 (0.99–1.00)

0.206

      

 NT-proBNPa [log pg/ml]

2.45 (1.54–3.90)

< 0.001

      

CMR LGE

        

 LV LGE present

1.61 (1.08–2.32)

0.024

      

 LV LGE involves insertion points

1.22 (0.77–1.94)

0.390

      

 LV LGE extent FWHM [g]

1.04 (1.02–1.06)

< 0.001

1.03 (1.01–1.05)

0.005

1.03 (1.01–1.05)

0.005

1.03 (1.01–1.05)

0.005

 RV LGE presenta

1.86 (1.07–3.24)

0.027

      

CMR ejection fraction

        

 LV EF [%]

0.96 (0.95–0.98)

< 0.001

1.00 (0.98–1.03)

0.726

1.00 (0.98–1.03)

0.728

0.98 (0.96–1.00)

0.074

 RV EF [%]

0.95 (0.94–0.97)

< 0.001

0.98 (0.96–0.99)

0.038

0.98 (0.96–1.00)

0.072

0.98 (0.96–1.00)

0.082

CMR feature tracking

        

 LV GLS [%]

1.15 (1.10–1.20)

< 0.001

1.10 (1.01–1.20)

0.037

1.10 (1.01–1.21)

0.044

  

 LV GCS [%]

1.12 (1.08–1.16)

< 0.001

      

 LV GRS [%]

0.94 (0.92–0.96)

< 0.001

      

 RV GLS [%]

1.07 (1.04–1.10)

< 0.001

  

1.00 (0.96–1.04)

0.932

1.01 (0.97–1.05)

0.622

Model Chi-Square

 

41.97

51.65

47.6

 Df

4

5

4

 p value

< 0.001

< 0.001

< 0.001

 − 2 Log-Likelihood

1074.4

1074.4

1179.5

 p-value vs. model without RV GLS

 

0.932

0.623

  1. CI: confidence intervals; EF: ejection fraction; Df: degrees of freedom; FWHM: full width half max; GCS/GLS/GRS: global circumferential/longitudinal/radial strain; HR: Hazard ratio; LGE: late gadolinium enhancement; LV: left ventricle; NT-proBNP: N-terminal pro-hormone brain natriuretic peptide; RV: right ventricle
  2. aVariables with > 20% missing values. Troponin was available in 338 (51.3%) patients. NT-proBNP was available in 159 (24.1%) of patients. RV LGE was not assessable in 270 (41%) of patients