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Table 2 Univariate and multivariate analysis of variables associated with all-cause mortality in PP patients and SP patients with ICDs/CRT-Ds

From: Regional disparities and risk factors of mortality among patients at high risk of sudden cardiac death in emerging countries: a nonrandomized controlled trial

 

Primary prevention patients

ICDs/CRT-Ds implanted secondary prevention patients

Univariate

Multivariate

Univariate

Multivariate

Characteristics

Hazard ratio

P -value

Hazard ratio

P -value

Hazard ratio

P -value

Hazard ratio

P -value

Demographics

 Age (years)

1.023 (1.013, 1.032)

 < .0001

1.025 (1.015, 1.035)

 < .0001

1.046 (1.031, 1.062)

 < .0001

1.031 (1.014, 1.048)

0.0004

 Gender male

0.886 (0.690, 1.139)

0.3455

0.897 (0.691, 1.163)

0.4107

1.708 (1.019, 2.863)

0.0421

1.497 (0.855, 2.621)

0.1583

Medical History

 NYHA III-IV

1.664 (1.326, 2.089)

 < .0001

1.726 (1.322, 2.253)

 < .0001

2.801 (1.930, 4.066)

 < .0001

1.410 (0.918, 2.166)

0.1168

 ICM

1.200 (0.931, 1.548)

0.1588

1.219 (0.928, 1.602)

0.1556

2.156 (1.468, 3.167)

 < .0001

1.052 (0.679, 1.631)

0.8199

 NICM

0.834 (0.664, 1.048)

0.1197

  

1.058 (0.714, 1.570)

0.7777

  

 Congestive heart failure

1.695 (1.361, 2.110)

 < .0001

1.569 (1.246, 1.977)

0.0001

3.436 (2.357, 5.009)

 < .0001

2.227 (1.466, 3.382)

0.0002

 Syncope

0.881 (0.554, 1.401)

0.5923

  

1.153 (0.795, 1.671)

0.4536

  

 NSVT

1.313 (1.041, 1.656)

0.0214

  

0.815 (0.473, 1.404)

0.4614

  

 Hypertension

1.047 (0.837, 1.309)

0.6878

  

1.563 (1.076, 2.270)

0.0191

  

 Diabetes

1.283 (1.017, 1.618)

0.0358

1.280 (1.007, 1.626)

0.0435

1.951 (1.311, 2.903)

0.001

  

 Myocardial infarction

1.258 (1.006, 1.572)

0.044

  

2.272 (1.562, 3.303)

 < .0001

1.672 (1.083, 2.582)

0.0203

 Left Buddle Branch Block

0.792 (0.605, 1.036)

0.0891

  

1.413 (0.738, 2.707)

0.297

  

 PR interval

1.003 (1.001, 1.006)

0.0086

  

1.003 (0.999, 1.007)

0.1413

  

 QRS duration

1.001 (0.997, 1.004)

0.7099

  

1.007 (1.003, 1.011)

0.0016

  

 LVEF

0.950 (0.933, 0.968)

 < .0001

0.951 (0.934, 0.970)

 < .0001

0.954 (0.941, 0.968)

 < .0001

0.978 (0.961, 0.995)

0.0127

Therapy

 Antiarrhythmics excluding beta blockers

1.502 (1.206, 1.870)

0.0003

1.287 (1.016, 1.630)

0.0366

1.777 (1.210, 2.611)

0.0034

  

 Beta blockers

0.768 (0.604, 0.977)

0.0319

  

1.050 (0.717, 1.538)

0.7014

  

 ACEI/ARB

0.662 (0.527, 0.832)

0.0004

0.711 (0.561, 0.901)

0.0048

1.066 (0.736, 1.546)

0.7343

0.555 (0.375, 0.822)

0.0033

 Diuretics

1.613 (1.136, 2.292)

0.0076

  

3.612 (2.396, 5.445)

 < 0.0001

2.132 (1.343, 3.384)

0.0013

 ICD implanted

0.840 (0.647, 1.090)

0.1901

0.652 (0.495, 0.860)

0.0024

-

-

  

 CRT-D implanted

0.627 (0.473, 0.832)

0.0012

0.417 (0.308, 0.564)

 < .0001

1.669 (1.029, 2.707)

0.038

  

Region

 Southeast Asia

1 (ref)

 

1 (ref)

 

1 (ref)

 

1 (ref)

 

 East Asia

0.973 (0.779, 1.216)

0.8111

0.561 (0.416, 0.756)

0.0002

0.515 (0.355, 0.748)

0.0005

  

 South Asia

0.709 (0.541, 0.930)

0.0129

  

1.341 (0.840, 2.140)

0.2183

  

 Latin America

1.106 (0.678, 1.805)

0.6856

  

2.093 (1.122, 3.903)

0.0202

2.014 (1.047, 3.874)

0.036

 Europe

0.509 (0.190, 1.365)

0.1795

  

0.680 (0.168, 2.750)

0.5881

  

 Middle East and Africa

1.439 (0.808, 2.562)

0.2164

  

3.769 (2.022, 7.027)

 < 0.0001

3.684 (1.876, 7.237)

0.0002

  1. Abbreviations: ICD implantable cardioverter-defibrillator, CRT-D cardiac resynchronization therapy-defibrillator, PP primary prevention, SP secondary prevention, NYHA New York Heart Association, ICM ischaemic cardiomyopathy, NICM non-ischaemic cardiomyopathy, NSVT non-sustained ventricular tachycardia, LVEF left ventricular ejection fraction, ACEI/ARB angiotensin-converting enzyme inhibitor/angiotensin receptor blocker