Fig. 2From: Intraoperative mild hyperoxia may be associated with improved survival after off-pump coronary artery bypass grafting: a retrospective observational studyMultivariable restricted cubic spline models for log-odds of in-hospital mortality according to intraoperative time-weighted average PaO2. A Adjusted for the covariates in model 1. B Adjusted for the covariates in model 2. Bands indicate 95% confidence intervals. PaO2, arterial oxygen partial pressureBack to article page