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Table 3 Multivariable logistic regression analysis for cardiovascular dysfunction risk

From: Effect of cardiopulmonary bypass reoxygenation on myocardial dysfunction following pediatric tetralogy of Fallot repair

  Odds ratio (95% CI) P value
Categorical PpO2, %   
Lower PpO2 1.000 (ref)  
Higher PpO2 1.858 (1.078, 3.202) 0.026
Clinical covariates   
Sex, %   0.667
 Female 1.000 (ref)  
 Male 0.886 (0.510, 1.539)  
SpO2 (per % increase) 0.954 (0.927, 0.983) 0.002
LVEDV index, ml/m2 1.005 (0.981, 1.030) 0.668
Pulmonary annular Z-score, %   
 < − 4.0 1.000 (ref)  
 − 2.0 to − 4.0 0.747 (0.395, 1.415) 0.372
 > − 2.0 0.451 (0.220, 0.924) 0.030
McGoon index, %   0.341
 ≤ 1.5 1.000 (ref)  
 > 1.5 1.325 (0.742, 2.366)  
Blood transfusion, %   
 None (< 10 ml per kg) 1.000 (ref)  
 Minor (10–30 ml per kg) 1.011 (0.481, 2.125) 0.978
 Major (> 30 ml per kg) 1.015 (0.455, 2.264) 0.972
CPB time (per min increase) 1.009 (1.004, 1.014) 0.0002
  1. PpO2 = perfusate oxygenation; SpO2 = percutaneous oxyhemoglobin saturation; LVEDV = left ventricular end-diastolic volume; CPB = cardiopulmonary bypass. CI = confidence interval