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Table 4 Predictors of death by Cox regression analysis

From: Comparison of clinical outcomes in patients undergoing mitral valve replacement with mechanical or biological substitutes: a 20 years cohort

Variable HR (95% CI) p
Mechanical prosthesis 0.96 (0.61-1.50) 0.855
Renal failure 4.41 (2.36-8.25) < 0.001
Bleeding events 3.13 (1.68-5.80) < 0.001
Age group   
≤ 50 years 1.0  
51–60 years 1.39 (0.82-2.38) 0.224
61–70 years 1.98 (1.11-3.56) 0.022
≥ 71 years 2.96 (1.54-5.71) 0.001
Mitral regurgitation 1.49 (0.97-2.29) 0.069
SAH 1.45 (0.95-2.23) 0.088
Chronic atrial fibrillation 1.46 (0.91-2.33) 0.114
Emergency surgery 1.69 (0.82-3.47) 0.153
Diabetes mellitus 1.62 (0.82-3.19) 0.163
Ischemia time 1.01 (0.99-1.01) 0.180
ICU time (h) 1.00 (0.99-1.00) 0.492
Hospitalization time 1.01 (0.99-1.02) 0.501
MV time (h) 1.00 (1.00-1.01) 0.589
Diameter 1.03 (0.92-1.15) 0.654
CHF class III and IV 1.10 (0.70-1.75) 0.675
Postoperative stroke 1.36 (0.31-5.99) 0.681
COPD 0.91 (0.48-1.70) 0.759
ECC time > 120 min 1.11 (0.40-3.10) 0.843
Rheumatic fever 1.02 (0.60-1.71) 0.949
  1. HR, hazard ratio; 95% CI = 95% confidence interval; BMI, body mass index;
  2. ECC, extracorporeal circulation; ICU, intensive care unit; MV, mechanical ventilation; CHF, congestive heart failure; AMI, acute myocardial infarction; COPD, chronic obstructive pulmonary disease; SAH, systemic arterial hypertension.
  3. Significant results (p < 0.005) are highlighted in bold.