Figure 3From: Carboxyhemoglobin levels in medical intensive care patients: a retrospective, observational studyCorrelation between minimal carboxyhemoglobin during the stay on the ICU with SAPS II score. Pearson's correlation coefficient with 95% confidence intervals: 0.21 (0.14 to 0.27), P < 0.0001. The line and error bars (95% confidence intervals) are derived from linear regression.Back to article page