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Table 1 Univariate/multivariate testing: mortality-associated factors of patients admitted after cardiac arrest

From: Effect of intensive care after cardiac arrest on patient outcome: a database analysis

  Univariate logistic regression Multivariate generalized estimation equation model
  All patients (died in hospital, %) Odds ratio (95% CI) P value Odds ratio (95% CI) P value
SAPS II scorea   1.061 (1.057-1.064) <0.001 1.05 (1.05-1.06) <0.001
Male 3,753 (54.92) 0.85 (0.76-0.95) 0.003 0.96 (0.84-1.09) 0.5262
Age   1.03 (1.02-1.03) <0.001   
Year   1.01 (0.99-1.02) 0.241 0.98 (0.96-1.01) 0.187
Year dichotomized (before and after 2005)   1.065 (0.96-1.181) 0.237 0.87 (0.73-1.04) 0.1386
Comorbidities      
Chronic renal insufficiency 618 (66.83) 1.64 (1.37-1.95) <0.001   
Chronic respiratory insufficiency 510 (63.92) 1.41 (1.17-1.7) <0.001   
Chronic cardiac failure NYHAb IV 1,474 (61.67) 1.34 (1.19-1.51) <0.001   
Coronary angiography unit in hospital 3,805 (56.64) 0.93 (0.82-1.04) 0.205   
ICU type      
Medical cardiac 1,739 (58.48) Reference   Reference  
Medical 1,850 (55.84) 0.9 (0.79-1.02) 0.110 0.79 (0.59-1.07) 0.1256
Postoperative:– hospital <500 beds 1,172 (59.3) 1.03 (0.89-1.2) 0.660 0.82 (0.61-1.1) 0.1858
Postoperative: hospital ≥500 beds 1,008 (51.98) 0.77 (0.66-0.9) 0.001 0.76 (0.5-1.13) 0.1767
Trauma 88 (37.5) 0.43 (0.27-0.66) <0.001 0.39 (0.17-0.92) 0.0313
Admission type      
Medical 5,665 (56.88) Reference    
Scheduled surgery 88 (28.41) 0.3 (0.19-0.48) <0.001   
Unscheduled surgery 95 (49.47) 0.74 (0.49-1.11) 0.147   
10 resuscitations per year   0.99 (0.95-1.03) 0.497 0.7 (0.57-0.86) 0.0009
SAPS II × 10 resuscitations per year     1 (1–1.01) 0.014
Beds in ICU   0.96 (0.95-0.98) <0.001 1.02 (0.96-1.08) 0.4823
TISS-intervention (patient received: yes/no)      
Mechanical ventilation 5,339 (60.09) 6.79 (5.39-8.55) <0.001   
Enteral nutrition 2,962 (49.66) 0.57 (0.52-0.64) <0.001   
Parenteral nutrition 2951 (53) 0.76 (0.68-0.84) <0.001   
Renal support 482 (68.88) 1.79 (1.47-2.19) <0.001   
Single vasoactive medication 3,489 (52.08) 0.65 (0.58-0.72) <0.001   
Multiple vasoactive medication 2,803 (64.4) 1.88 (1.69-2.09) <0.001   
Interventions outside the ICU 2,738 (50.26) 0.63 (0.56-0.69) <0.001   
Cardiopulmonary resuscitation 2,704 (68.9) 2.64 (2.37-2.94) <0.001   
  1. Odds ratios were constructed for hospital mortality with univariate/multivariate analysis. aSAPS II, Simplified Acute Physiology Score II; bNYHA, New York Heart Association functional classification.