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Table 2 Two separate multivariate models constructed using backward multivariate logistic regression

From: Is venous congestion associated with reduced cerebral oxygenation and worse neurological outcome after cardiac arrest?

Model Step 1 Final step
  OR (p value) OR 95 % CI P
Model 1: cardiac arrest variables     
Age 0.99 (0.84)    
 Bystander CPR, yes/no 3.75 (0.27)    
 Shockable rhythm, yes/no 8.93 (0.02) 11.36 1.8–71.5 0.01
 Time to ROSC 0.98 (0.63)    
 Percentage time CVP >5 mmHg 0.94 (0.03) 0.94 0.89–0.99 0.02
Model 2: hemodynamic variables
 Percentage time MAP <65 mmHg 0.96 (0.03) 0.96 0.93–0.99 0.04
 Ejection fraction, % 0.99 (0.56)    
 Percentage time CVP >5 mmHg 0.95 (0.03) 0.95 0.90–0.99 0.03
  1. In the first model, arrest variables were included (age, bystander cardiopulmonary resuscitation (CPR) <10 minutes, shockable rhythm, time to return of spontaneous circulation (ROSC), and percentage time central venous pressure (CVP) >5 mmHg) and in the second model, hemodynamic variables were included (mean, mean arterial pressure (MAP)/24 h, ejection fraction, mean CO/24 h, percentage time CVP >5 mmHg). Odds ratios (OR) for survival with a good neurological outcome at 180 days (cerebral performance category 1–2) are shown