Fig. 2
Bland-Altman graphs of intraosseous and arterial samples (left panels), and the comparison of the biases between intraosseous samples and venous samples in reference to arterial samples (right panels) for POC measurements of pH, base excess, bicarbonate, pO2, and pCO2. The dotted lines on the Bland-Altman graphs indicate bias and the limits of agreement (+/− 1.96 SD). The error bars on the right panels represent biases (95% confidence intervals). IO1 – first intraosseous sample; IO2 – second intraosseous sample after 2 ml of waste blood was drawn; V – venous sample; A – arterial sample